Heatwave: What to Wear to Work

Heatwave: What to Wear to Work

June 23, 2026

Stylist explains what to wear to work during a heatwave

In partnership with the Met Office, UK Health Security Agency (UKHSA) have issued yellow and amber Heat-Health Alerts, covering most of the UK until Thursday. Temperatures could hit 38°C in parts of England.

Recognising that this kind of weather can make dressing for the office challenging, creative stylist at M&S, Jessica Rea Long, explains five pieces of advice to make it easier for women below.

During a heatwave, dressing for the office can become a daily challenge. Balancing comfort and professionalism can be difficult. Plus, it’s hard to find an outfit that works both for a sweaty commute and an airconditioned office. Luckily, we spoke with creative stylist at M&S, Jessica Rea Long, and she shares five pieces of advice to make it easier.

“Regardless of how strict your company’s dress code is, on the rare occasions we get hot weather, getting dressed in the morning becomes more difficult. Office wear tends to be made from heavier, structured fabrics and much of our summer attire feels too casual or beachy. But I swear by these must-know tips when getting dressed for work during a heatwave.”

1. Prioritise breathable fabrics

Jessica says, “To survive the heatwave commute, fabric choice is essential. Of course, linen and cotton are known for their breathability.

“But other lightweight fabrics that are dominating style this season include broderie, seersucker and gauze. As an alternative to knitwear, pointelle and crochet are also perfect. If you wear a lot of denim to the office, chambray looks almost identical from a distance but is much more lightweight – an ideal heatwave alternative.” She says.

Pure Cotton Poplin Tie Side Midi Skirt

M&S Per Una Pure Cotton Broderie Cutwork Shirt

Pure Linen Wide Leg Palazzo Trousers

2. Don’t rule out shorts

“Typically, shorts aren’t something you’d associate with office attire.” Jessica says. “But with their longline silhouette, Bermuda shorts are a heatwave-approved alternative to tailored trousers. Look out for breezy cotton or linen-rich fabrics and pair with an oversized blazer or simple white cotton vest.”

Cotton Rich High Waisted Pleat Front Bermuda Shorts

Faux Suede Weave Effect Longline Shorts

Linen Blend High Waisted Belted Bermuda Shorts

3. Go sleeveless

“Sleeveless is often the way to go during a heatwave. But for some people a vest can feel too casual for work. A great alternative is a waistcoat which adds a touch of tailoring while keeping your arms uncovered. Plus, many come as part of a co-ord – a head-to-toe outfit at the ready but much less formal than a suit.

“In hot weather, avoid anything knitted. Instead look out for linen compositions, lower necklines and looser fits.”

Linen Blend Contrast Piping Waistcoat

V-Neck Tie Front Waistcoat with Linen

Linen Blend Striped Waistcoat

4. Let your feet breathe

“While I think a smart sandal can absolutely work for the office, if you don’t feel comfortable having your toes on show, there are lots of other options. Many of this season’s staple shoes offer the same level of breathability in a style with a little more structure and coverage.

“As an alternative to sandals, opt for leather laser cut ballet pumps, woven loafers or mesh Mary Janes. The perforated texture allows airflow to keep your feet cool. For a summery pop of colour, retro-inspired cutout jelly shoes are another fantastic choice.”

Leather Laser Cut Flat Ballet Pumps

Leather Woven Flat Loafers

Flat Jelly Shoes

5. Layer up

“Layering is key when dressing for the office during a heatwave, as it allows you to adapt to temperature changes throughout the day.” Jessica says. “While your commute may be hot and humid, air-conditioned offices can be chilly so don’t forget to pack a lightweight layer. Something that covers your arms like a long-sleeve shirt, linen blazer or fine cardigan is spot-on.”

Linen Rich Embroidered Jacket

Tie Belted Blazer with Linen

Wide Sleeve Short Length Cardigan

Anabel is a graduate of King’s College London and upon graduating, she set out on a journey to inspire and empower women through her words. Besides working as a digital marketing expert, Anabel is a freelance copywriter.