What to Wear in 20 Degree Weather – 13 Instagram Outfits to Inspire Your Transitional Looks

It’s that time of year when the weather is absolutely bearable, but neither here nor there when it comes to which season it is in. A veritable hotbed of confusion when it comes to getting dressed. It’s Autumn, but I am pretty sure I went out in my shorts in technically the same weather a month ago. Which begs the question, what to wear in 20 degree weather in October? Or 15 degrees and sweaty, or 17 degrees and windy. If the weather can’t make up its mind, how can we? My mind is on autumn trends, (with an occasional flick ahead to SS24 of course…) but my body is somewhat protesting to the weight of full autumn layers.

Luckily for us, these Instagram pros are here to provide outfit inspiration when we just don’t know wtf to put on when the weather is hovering somewhere between 15 and 20 degrees with a side of sweaty/windy/rainy/who even knows… Here’s some outfit inspo for what to wear when in 20 degree weather in Autumn.

Transitional Outfit Ideas – Striped Shirt + Denim + Bright Trainers

This one works for so many seasons. Just update your layering system appropriately depending on the chill factor and add a long sleeve underneath when it’s nippier and wear your shirt open over a tank when it’s still warmish.

Arket relaxed striped poplin shirt sewn from a crisp poplin weave made of cotton. This shirt features a pattern of yarn-dyed stripes. A long-sleeve style cut for a relaxed silhouette with slightly dropped shoulders.
ARKET Relaxed Poplin Shirt, £77.00
& Other Stories THE WIDE CUT CROPPED JEANS is a wardrobe saviour that goes great with any look and any mood. Crafted from organic cotton, this 5-pocket style features a high waist and a wide, cropped leg. – High waist – Wide, cropped leg– Comfort stretch– Zip and button flyAll trims (buttons, rivets, zippers and threads) for these jeans have been sustainably sourced.
& Other Stories Wide Cut Cropped Jeans, £75.00
The legendary adidas Gazelle silhouette. A sneaker that’s travelled through different cultural fashion markets and still stays a timeless model. Carrying the original modes of the 1991 Gazelle, using the same materials and textures to craft together this classic. With a suede upper and synthetic overlay to piece the 3-stripe branding and instantly recognizable t-toe. This iteration comes in a collegiate green colorway.
Adidas Gazelle Indoor Trainers Collegiate Green, £89.99

Good luck finding the collegiate green Sambas in stock (keep yourself notified here…), or move fast on these tasty green Gazelles. We are also pretty big on the blue and white.

Adidas Originals adidas Handball Spezial Shoes in red. Introduced in 1979, Today, they're a picture-perfect old-school trainer straight out of a vintage ad.
ADIDAS ORIGINALS HANDBALL SPEZIAL SHOES, £85

Currently trying to track these down in my size…

what to wear in 20 degree weather in Autumn – Denim Jumpsuit + Trainers

There is only a small window in which you can comfortably enjoy your denim jumpsuit if you ask me, and it is now. Just add a bomber for blustery days, or a turtleneck underneath when it’s cooler.

LF Markey indigo denim boiler suit with zip fastening and short sleeves. Side patch pockets and zip chest pockets.
L.F.Markey DANNY BOILERSUIT INDIGO, €199,95

If you are after Louisa’s actual boiler suit, here it is.

Autry reintroduced its classic 'Medalist' sneakers due to popular demand across the reseller community. Inspired by the laidback cool of '80s style, each pair is made in the USA and finished by hand for an authentic, vintage feel. They're crafted from smooth leather and lined with soft cotton-terry for added comfort.
Autry Medalist Low leather sneaker, £212

Classic.

& Other Stories Collared jumpsuit secured with a tonal buckle belt.

– Fitted, straight silhouette
– Button closures at the front
– Duo pockets
– Zip fly
& Other Stories Belted Jumpsuit, £120

This chic belted jumpsuit comes in indigo or grey denim.

The iconic basketball style that transcends age and time, this style has been re-crafted to the specifications Chuck Taylor All Star from the ’70s, featuring higher rubber foxing, added cushioning, a roomier toe box, and are made using heavy grade canvas in a parchment colourway.
Converse All Star Chuck 70 Hi Trainers Parchment, £84.99

Sometimes you can’t beat classic Converse when it comes to trainer trends that never go out of style.

Arket Denim jumpsuit crafted from cotton twill. Detailed with a stand collar, a front placket, a concealed zip and snap buttoning. Straps with buckles at side seams for adjusting fit. Patch pocket at both front and back. Chest pockets with zip closure.
ARKET Denim Jumpsuit, £149.00

This boiler suit style is great for casual days.

Transitional Outfit Ideas – Red Knit + White T-Shirt + Jeans + Mary Janes

Red is the new everything, and a colour pop knit with denim is an easy way to wear it layered over a white t-shirt and paired with on-point Mary Janes.

Arket red Loose-knit jumper made from a blend of responsibly sourced wool and mohair (cert. C815571RAF-01.2021). This jumper is styled with rolled edges at neckline and clean edges at cuffs and hemline. Relaxed fit.
Arket Loose-Knit Wool-Mohair Jumper, £119

A red knit is all I want to wear right now.

Arket white T-shirt cut from a heavy single jersey cotton knit. The sturdy but soft feel gives a smart look that stays in shape. A short-sleeved style with a round neckline and classic fit.
Arket Heavyweight T-Shirt, £37

This heavyweight t-shirt is such a staple.

Me + Em red ultra soft lofty cashmere cropped jumper with zip neck.
Me + Em Ultra-Soft Lofty Cashmere Cropped Jumper, £250.00

The zip neck detail on this Me + Em knit is a great touch.

Setting the standard for modern denim, all of Agolde's designs are fit-tested and crafted from premium fabric. The 90's mid-rise jeans are defined by their cropped, straight legs.
AGOLDE 90’s mid-rise cropped straight jeans, £262

Classic.

Reformation blue denim Val 90s mid rise straight jeans. Button closure and zipper fly..
Reformation Val 90s Mid Rise Straight Jeans, £148

Obsessed with this red cardigan.

These Charles & Keith classic black Mary Janes are anything but ordinary. They feature a glossy patent finish, multi-strap design, and sculptural cylindrical heels that will make a fashion statement wherever you go. Thanks to the heels’ blocky design, they offer a 6.5cm elevation without compromising comfort. Style these Mary Jane pumps with an all-black ensemble for a Wednesday Addams-inspired look.
Charles & Keith Claudie Patent Buckled Mary Janes, £69

French girl vibes.

Crafted from black suede, the Alohas Evelyn is a mary-jane shoe with a slight pointed toe and double straps. If you’re amongst those who love the Luke, we’re pretty sure you might fall for this style, too.
Alohas Evelyn Black Suede Mary-Jane Flats, (£142.00) £120.00

If you prefer flats, then get these perfect suede Mary Jane flats on pre-Order now for -15%.

With its half-moon shape, signature clasp and an infinite range of colours: Sezane's Claude will never leave your shoulder this season. The best part? Claude is bigger than it looks, and the perfect size to carry books, notebooks and the largest purse you own.
Sezane CLAUDE BAG Glossy Black, €345

This bag is so classic.

what to wear in 20 degree weather in Autumn – Black Jeans + Black Top + Light Jacket

Keep it simple in all black, and a touch of beige and you can’t go wrong. Switch the heels for a pair of Mary Jane ballet flats if you’re trekking about town.

Reformation beige marco bomber jacket. Waist adjustable, chest pockets, welt pockets, and front zipper.
Reformation Marco Bomber Jacket, £198

For something a little warmer, check out this Aligne cropped wool bomber.

H&M black Cropped, fitted vest top in ribbed cotton jersey with a narrow trim around the neckline and armholes.
H&M Cropped vest top, £9.99

Easy peasy.

Levis high waist ribcage straight leg black denim jeans. 5 pockets, belt loops, zip and button fly.
Levis RIBCAGE STRAIGHT ANKLE JEANS, £110

Levi’s Ribcage Straight Ankle jeans are a staple style.

Arket Slingback pumps crafted from smooth leather. Featuring a pointy toe with a squared finish and a comfortable kitten heel with a golden detail. Leather-covered elastics at the back. Leather insock and outsole. Heel height 5.5 cm.
Arket Slingback Leather Pumps, £179

Pointed slingbacks are having a major moment.

Transitional Outfit Ideas – Bright Blazer + Jeans + Clogs

In love with this outfit. Just add socks and a scarf when it’s nippier out.

Notable for its understated yet sophisticated approach to design, Joseph delivers the building blocks for your forever wardrobe. The Jaden blazer is a double-breasted piece made from stretchy wool into a tailored silhouette with shoulder pads
JOSEPH Jaden wool blazer, £595

The colour!

AGOLDE's 'High Rise Stovepipe' jeans are made from soft cotton-blend denim in a classic medium wash. They're cut for a straight leg fit and sit high on the waist to elongate your frame. Keep the 'Aspire' wash in the best condition by washing this pair inside out, and only when you have to.
AGOLDE High Rise Stovepipe straight-leg jeans, £280

Sometimes a high rise straight leg just makes sense.

Mango black leather clogs with buckle. 100% bovine leather. Clog style. Rounded toe. Flat. Decorative buckle.
Mango Leather clogs with buckle, £89.99

Love a clog.

These tortoiseshell glasses from Celine Eyewear are a timeless accessory. Made in Italy from acetate, they have a square silhouette with signature studding and discreet gold-tone branding on the temples. Please note that the color of the protective case may vary.
CELINE EYEWEAR Square glasses, £300

Statement glasses are trending.

& Other Stories Timeless shoulder bag crafted in glossy chrome-free leather, detailed with an adjustable buckled strap. Inside the cotton lined interior you'll find a large zipped pocket.
`& Other Stories Glossed-Leather Shoulder Bag, £95

This simple bag is chic and so versatile.

COS gold wavy hoop earrings. Crafted from shiny gold-tone recycled brass, these hoop earrings have a wavy organic shape that nods to surrealism. They're an easy way to add interest to casual outfits.
COS WAVY HOOP EARRINGS, £30

A twist on the classic gold hoop.

what to wear in 20 degree weather in Autumn – Leather jacket + Denim Skirt + Knee Boots

On cooler days the addition of some warming knee-high boots and a leather jacket take your denim maxi and tank top into transitional autumn territory.

Collarless arket burgundy shirt crafted from chrome-free leather. Cut for a boxy fit and detailed with chest pockets.
Arket Leather Shirt, £319

This burgundy leather shirt is so beautiful.

Long frayed edge denim skirt crafted from organic and recycled cotton. Featuring a raw edge hem cut in a long silhouette, with a centre front high slit, classic 5-pocket style and a high-cut waist. Finished with a zip and button fly closure. All trims (buttons, rivets, zippers and threads) have been sustainably sourced.
& Other Stories Long Frayed Edge Denim Skirt, £85

If you’re still searching for your perfect denim maxi skirt, check out our edit

Arket black knee high Boots in chrome-free leather designed with a straight, wider-fitting shaft and a pointed toe. The kitten heel allows for comfortable all-day wear. Heel height 5 cm. Shaft height 42 cm.
Arket Pointed Kitten-Heel Boots, £279

These pointed kitten heel boots are so good.

COS cream Merino wool crew neck long sleeve top.
COS CREW-NECK MERINO WOOL TOP, £45

Second-skin long-sleeve top’s are an autumn/winter wardrobe essential.

COS gold coloured oval; hoop earrings.
COS OVAL HOOP EARRINGS, £19

These oval hoops are a little bit different and will look great with burgundy.

Transitional Outfit Ideas – Dungarees + Shirt + Blazer

Is it just me or are dungarees having a major moment again? Smarten yours up like this, with the addition of a shirt and blazer.

Made of RWS certified wool, this semi-constructed blazer is cut from an Italian fabric, woven in a hopsack construction - a loose basket weave with a subtle geometric texture that makes the garment durable and airy, naturally resistant to wrinkling. A slim-fitted style with two buttons at front, one chest pocket and two jetted pockets with flaps.
Arket Modern Blazer Hopsack, £249

Arket’s hopsack blazer is cult for a reason.

Vintage pinstriped dungarees. Classic workwear style overall / dungaree with suspenders and pockets.
Denim fabric, striped white pinstripes and navy blue (or dark charcoal grey).
Vintage Striped Denim Overall / Dungaree, £101.36

These are a treat.

Crafted from cotton with a washed effect, this elegant white COS shirt is cut for an oversized fit and features a patch pocket on the chest and a flattering curved hem. The pointed collar and cuffed long sleeves add a tailored finish.
COS OVERSIZED TAILORED SHIRT, £59

A crisp white shirt is more essential than ever this season…

Founded in 2003, Los Angeles label Citizens of Humanity has become synonymous with quality denim the world over. Effortlessly cool, the Jodie overalls are made from rigid cotton to a relaxed silhouette, featuring adjustable shoulder straps.
CITIZENS OF HUMANITY Jodie denim overalls, £477

Classic.

Classic penny-style loafers in a polished leather finish, with a rounded-toe and mini-stacked heel.
& Other Stories Leather Penny Loafers, £110

Loafers will add a grown up touch to your dungarees.

ntroducing the Fold bag, a new-season hero debuting for Autumn Winter 2023. It's offered in a classic black hue and crafted from butter-soft leather, which our expert artisans meticulously folded to achieve the signature shape. Wear it across the body or detach the strap to carry it by the pair of rounded handles.
COS FOLD SHOULDER BAG – LEATHER, £135

This bag is so good.

what to wear in 20 degree weather in Autumn – Baggy Denim + Ballet Flats + Leather Jacket

Baggy denim gets a chic update in white.

Aligne Kerr leather jacket. Crafted from buttery-soft chrome-free leather, Kerr is a statement piece in every single possible way. Designed with dropped shoulders, long sleeves and in a boxy fit, it has a contemporary, cool look that's easy to style. Pair with the matching KRISTAL jogger for head-to-toe coordination.
Aligne KERR LEATHER JACKET, £249.00

Still looking for your perfect leather jacket?

Raey's high-rise, wide-leg ivory denim jeans are made from organic cotton, which uses less water and chemicals during the fabric production process.
Shown here with: Raey Scoop-neck cotton-blend jersey vest and Maison Margiela Tabi 60mm split-toe leather slingback pumps
RAEY Organic cotton relaxed army jeans, £160

Raey’s ivory wide leg jeans are just the ticket.

Mango velvet ballerina shoes in black with round toe and bow on the front.
Mango Ballerina shoes with velvet bow, £45.99

In love with these velvet ballet flats for day to night dressing.

Cut from a soft ribbed jersey fabric made from organic cotton with a hint of elastane, this white Arket tank top is styled with a slim fit and a flattering racer-shaped neckline and back.
Arket Rib Racer Tank Top, £17

Staple.

Reformation black leather ballet flat. Flat heel, square toe, flat heel height.
Reformation Mikayla Ballet Flat, £268

The square toe is so chic.

Designed with a wider oval fit for all face shapes and sizes, the Outta Trash sunglasses feature luxurious gold metal hardware on both temples and are made from recycled PET plastic.
Le Specs Outta Trash Sunglasses, £85

The oval shape is so classic.

Transitional Outfit Ideas – Sweater Vest + Maxi

All black layers and a bright sweater vest is such a chic way to do colour. Remove the roll neck when its still muggy outside and switch for ballet flats if it’s not yet boot season.

Arket Roll-neck jumper fine-knitted with a rib texture. A slim-fit design, detailed with thumbholes at the end of sleeves. Responsible Wool
Arket Merino Wool Roll-Neck, £67

An autumn/winter wardrobe staple.

handmade chunky knit lilac sweater vest.
Classic Reversible Wool Sweater Vest, £98.19

Emma’s sweater vest is from Smythe and is unfortunately sold out in most sizes. But have a dig on Etsy for similar hand-knitted vibe, like this reversible wool sweater vest, or this lilac mohair knit vest.

The maxi skirt trend shows no sign of slowing for the upcoming season. Debuting as part of the COS Autumn Winter 2023 collection, this piece is crafted from a cotton blend and shaped with a high waistband and back slit for ease of movement.
COS COLUMN MAXI SKIRT, £75

A black maxi has you covered for any eventuality this season.

Defined by a glossy black patent leather construction, these ankle boots from Prada infuse everyday ensembles with polished flair. The minimalist silhouette stands out with a unique square-toe design and decorative straps showcasing the signature logo plaque.
PRADA Patent leather ankle boots, £1,160

So pretty.

what to wear in 20 degree weather in Autumn – Grey Pants + Grey Knit + Converse

You may have noticed grey is trending, and what better way to wear it than head to toe with a slither of fresh white and your trusty converse.

This collared Polo Ralph Lauren sweater was cable-knit from wool and cashmere. This style is complete with Pony embroidery, a telltale Polo Ralph Lauren signature that imbues every look with preppy charm.
Polo Ralph Lauren Grey Cable Knit wool & cashmere Sweater, £300

Anne-Laure’s lovely Musier Paris knit doesn’t seem to be available, but you can get the look with this super soft cashmere wool cable knit. I am also a really big fan of this Magda Butrym Cable Knit Cashmere Cardigan. Its the season of the cardigan btw, shop our edit here

Arket white T-shirt cut from a heavy single jersey cotton knit. The sturdy but soft feel gives a smart look that stays in shape. A short-sleeved style with a round neckline and classic fit.
Arket Heavyweight T-Shirt, £37

The perfect white t-shirt.

Arket grey hooded wool jumper. Hooded jumper with a relaxed fit. Crafted from a certified wool blend with a warm furry textured effect (Responsible Wool Standard cert. C815571RAF-01.2021). Ribbed trims.
Arket Hooded Wool Jumper, £119

Also a BIG fan of this Arket grey textured hooded jumper.

Arket classic black leather belt detailed with silver-coloured metal trimmings. Width 30 mm.
Arket Leather Belt, £57

Belts are back. No, seriously…

Arket grey Wool-blend trousers with a relaxed fit. This is a full-length, mid-waist style with slanted side pockets and back pockets.
Arket Relaxed Wool Blend Trousers, £97

You will get so much wear out of a pair of grey trousers this season.

Few sneakers are more enduring than Converse's 'Chuck 70' - it's been nearly a century since they debuted and they're still so relevant and timeless today. This classic high-top pair is made from durable canvas and set on chunky, glossed-rubber soles. They're finished with the signature, vintage star appliqué.
CONVERSE Chuck 70 canvas high-top sneakers, £85

Classics.

Iconic CHRISTIAN DIOR saddle bag - navy & golden hardware. Great condition! With authenticity card & dust bag. RRP £3690
Vestiaire Collective Dior Saddle Bag, (£1,993.95) £1,774.50

If you have been saving…

COS This pillowy bag is crafted from chrome-free nappa that's buttery soft and embellished with gleaming gold-tone chain links. It's thoughtfully designed with practical touches, such as the concealed zip closure and internal cardholder, and can be tucked under your shoulder or carried in hand. Why not match your jewellery to the hardware?
COS LINK BAG – LEATHER, £125

Just in case your budget doesn’t stretch to vintage Dior, this season’s chain & jewellery handbag details also look good on a high street budget. As proved by COS.

Transitional Outfit Ideas – Loose Jacket + Studded Bag + Baggy Denim

Anyone else keep spotting studded bags on Instagram and needing to get their hands on one? Mango has you covered. The loose coat and baggy jeans ensure you won’t overheat when it turns out its one of those sweaty autumn days. Plus it look’s really chic…

The Row believes your outerwear should be just as sharp as the clothes you wear under it - this 'Polli' coat is tailored with the same sleek elements as the label's blazers. Made from a warm wool-blend, it has a relaxed, double-breasted silhouette with a dramatic shawl collar and wide, knuckle-grazing sleeves.
THE ROW Polli double-breasted wool-blend coat, £2,640

The Row’s ‘Polli’ coat has a beautiful relaxed silhouette, dramatic shawl collar and wide, knuckle-grazing sleeves.

H&M Premium Selection
Short, oversized, double-breasted coat in a soft wool blend. Wide collar, buttons at the front, dropped shoulders, long sleeves and discreet pockets in the side seams. Unlined.
H&M Oversized wool-blend coat, £149.99

H&M’s oversized wool-blend coat is also pretty dreamy and comes in camel or grey.

Khaite mini lotus Crystal embellished bag.
Vestiaire Collective Khaite Mini Lotus Crystal Embellished Bag, (£1,704.76) £1,203.36

The dream bag.

Mango black studded shoulder bag
Mango Studded shoulder bag, £45.99

Mango’s studded bag is also a great option.

Reformation Carly High Rise slouchy wide leg blue denim jeans. Belt loops and zipper fly.
Reformation Cary High Rise Slouchy Wide Leg Jeans, £168

These jeans haver such a great silhouette.

What to Wear in 20 Degree Weather in Autumn – Big Scarf + Bright Cardigan + Jeans

Cardigans are having a major moment and the bright blue paired with yellow makes a dreamy autumn combination.

Add some luxury to your looks with our pure cashmere cardigan. Indulgently soft and cosy, this button up women’s cardigan can add a warm layer to work looks or your off duty styles, and makes enjoying the finer things in life that much easier by being made of machine washable cashmere.
AUTOGRAPH Pure Cashmere Crew Neck Cardigan, £89

Marks & Spencers have you covered with this little bit of everyday luxury.

Wrap up in this COS oversized striped scarf, which is knitted from a responsibly sourced mohair and wool blend and finished with fringed ends. The COS womenswear team designed it as part of a modular set with the coordinating jumper and bucket hat.
COS OVERSIZED MOHAIR-BLEND SCARF, £79

It’s all about big scarf energy this season…

Arket black Mid-size bag featuring a curved design. A versatile bag that can be worn on the shoulder or as a cross-body. Adjustable shoulder strap. Dimensions 34 cm x 22 cm.
Arket Mid Size Curved Shoulder Bag, £159

And big bag energy.

Arket MAPLE is cut in a non-stretch denim and features a high rise waist, slim fit and wide legs. Zip fly.
Arket MAPLE High Wide Jeans, £87

Such a flattering shape.

These Chelsea boots offer effortless but refined everyday footwear that is elevated through minimalist design in durable, chrome-free leather with meticulous detailing. Elastic gussets on the sides make the boots easy to put on. With a hard-wearing welted sole.
Arket Leather Chelsea Boots, £169

A classic Chelsea boot works every time.

As the name suggests, the Everyday earrings by Sophie Buhai will top off daily ensembles with an air of contemporary polish. Suitable for pierced ears, this medium-sized pair is made from sterling silver.
SOPHIE BUHAI Everyday Medium sterling silver hoop earrings, £245

Switch up your hoop game and tap into the silver jewellery trend.

Transitional Outfit Ideas – Knit Mini Dress + Knee High Boots

Flash some thigh whilst the weather still allows with a short knit dress and sassy knee-high boots. A winning look.

Keep warm with the Aligne Kyrony dress. Designed for a relaxed feel, it's a versatile piece that can be worn on its own with knee-high boots or paired with a pair of wide-leg trousers for everyday dressing. The design features cable detailing, wide sleeves and is finished in subtle camel colour.
Aligne KYRONY CABLE FUNNEL NECK DRESS, £149.00

A neutral cable knit will never do you wrong.

Made from smooth black calfskin leather, these knee-high boots draw on equestrian styles. The pair features square toes, a strap at the top of the shaft, and a silver Totême logo appliqué.
TOTEME Leather knee-high boots, £860

The chicest riding boots.

Saint Laurent manifests structured elegance with the Small Manhattan tote. Made in Italy from black croc-effect leather, this bag features a golden logo plaque fastening that offers subtle branding.
SAINT LAURENT Manhattan Small croc-effect leather tote, £1,850

Croc effect bags are having a moment and Saint Laurent’s Manhattan tote is so beautiful. Check out our bag trends report for other trending styles to know.

Made from a textured bouclé knit, Raey’s grey-marl sweater is designed with a classic crew neck and long raglan sleeves, hemmed by wide ribbed edges.
RAEY Raglan sleeve merino wool-blend bouclé jumper, £395

Have a Kendall moment and go sans jeans whilst the weather allows.

H&M Knee-high biker boots with round toes and decorative tabs around the ankle. Satin linings. Height of soles 2 cm. Heel 3.5 cm.
H&M Knee-high biker boots, £64.99

H&M’s knee-high biker boots are a grown-up take on the biker boot trend.

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