What to wear in the heat: Outfit ideas for the hottest time of the year

Having a meltdown? Here's what to wear in the heat to keep you cool

what to wear in the heat: Cos, Anthropologie, M&S, Mango, Boden
(Image credit: Cos, Anthropologie, M&S, Mango, Boden)

If you're jetting off somewhere sunny and worried about what to wear in the heat, don't worry, we've got you covered. And even if your climate feels temperamental right now, we're hopeful that clear blue skies and sunshine will return before the summer season comes to a close.

Feeling the warmth of the sun is something we look forward to every summer. But deciphering what to wear in the heat to keep looking effortlessly stylish is no easy task. If you've got your holiday lined up but are yet to pack, have no fear, we have plenty of ideas when it comes to what to wear in soaring temperature. Whether you want laidback and beachy, or alfresco dinner-ready, your sartorial sunshine style will be on point this season. 

When selecting what to wear in the heat, there are two main areas to concern yourself with. The first is fabric choice - as not all fabrics are suitable for hot weather and the second is the silhouette of the garment, as some outfit shapes will help to keep you cooler than others.  

What to wear in the heat: Fabric and silhouettes to choose

The first thing to remember is that in hot weather fabric choice is key. Natural fabrics such as cotton and linen are the most breathable, meaning they'll help to reduce sweatiness and allow air to pass through more easily to your skin, naturally keeping you cooler in climbing temperatures and should be top of your list during a heat wave. 

You should also look for more relaxed shapes, looser fitting clothing will be airier and will help keep you cool, allowing any breeze to get to your skin. 

What to wear in the heat: Outfit ideas

1. Dresses to wear in the heat

The best dresses are a smart go-to when thinking of what to wear in the heat. With a rapid rise in trapeze and A-line fits, a striking dress will make you look effortlessly put together, even when all you want to do is climb into your fridge. 

As with every item in this piece, you'll want to look for natural fabrics, such as the best linen dresses, or cotton iterations (but not silk) to keep you breezy as temperatures soar. While black dresses might be your preference, in hot weather you're better off in lighter and brighter hues, as these absorb the sun less than black. 

Relaxed fits will allow for air flow and stop you feeling trapped and clammy, with sleeves offering upper arm coverage and added sun protection. Look for designs that flare out over your lower torso - not only will they be most comfortable in the heat but they're also universally flattering.

If you're worried about thigh-rub as temperatures go up, we really do understand, but a dress will still be one of the coolest options. Try a pair of the best anti-chafing shorts (in a breathable fabric) under your dress to help protect your thighs without compromising on the rest of your outfit. 

2. Tops to wear in the heat

Once again, cotton, linen and other natural fabrications are your warm weather heroes when it comes to tops. From the best t-shirts to great shirts - natural fabric iterations will offer greater breathability that you'll welcome in a heat wave. 

When it comes to t-shirts, fitted designs (a little added jersey for contour is fine) will still be comfortable in the heat, but more relaxed silhouettes do give the opportunity for added airflow. 

For the best shirts, try 100% cotton or linen shirt styles will, as previously mentioned, help to keep you cool, and picking more oversized iterations will be more comfortable for a full day out and about. Particularly directional this season, thanks to the Quiet Luxury trend women are rediscovering the joy of simple, elegant pieces that are utterly timeless too. Sheer styles, such as silk-chiffon, are great for special occasions, adding elegance, without raising temperatures too high.

While silk is a natural fabric, when it comes to what to wear in hot weather, it's actually not always the best option. Silk marks easily, and degrades with heat and perspiration, meaning that sweat marks are likely to show and will leave a stain on the garment - and no one wants that. 

3. Skirts to wear in the heat

Less isn't necessarily more when it comes to what to wear in the heat. So while wearing a mini skirt might feel like the ideal choice for climbing temperatures, you might actually be better off donning a maxi or midi skirt instead. The additional length offers extra coverage and shade (keeping you a little cooler in the process), while selecting more A-line or circular skirt shapes will help with maximize airflow, which will naturally help with beating the heat. 

Skirts are of course more breezy than pants, but wider silhouettes and breathable fabrics will still keep you cooler than say a synthetic slip skirt - although these aren't totally off the table if that's your preferred silhouette.

As with all of the best hot weather clothing, avoid synthetic fabrics and give a nod to popular summer trends and discover boho and cottagecore styling, as these looks deliver on easy-breezy outfits.

4. Pants & shorts to wear in the heat

While fabric is important here, you will also want to consider the weight of the fabric. Plenty of the best jeans are made from 100% cotton, but in a heatwave, denim is far too heavy, despite its fabric composition. Opt for lighter fabrics, in more relaxed fits in order to help increase airflow, and with wide leg pants being one of the major spring/summer fashion trends 2023 there are plenty of flattering fits available too.  When it comes to shorts, while Daisy Dukes might feel seasonally appropriate, looser, straighter cut Bermuda shorts will actually be more comfortable in hot weather. 

If you're looking for summer outfits for work, opt for tailored pants in neutral hues and natural fabrications. Swap skinny fits, for high-waisted, wide-leg styles for a torso lengthening look that will keep you feeling professional without overheating - team with silky t-shirts, or light cotton blouses. 

Linen is a great fabric option for pants, although be aware it creases pretty badly, particularly around the crotch area once you've sat down, so you may want to look for a linen-blend that will crease less dramatically - or wear a longer, tunic-style top over them. If you're wondering how to wear linen pants for work, opt for a slightly more tailored fit and keep your top half neat and relatively contoured.

Elasticated waists are also more comfortable in hot weather as they're less constricting and give you that little bit more breathing room in sweltering heat. 

5. Shoes to wear in the heat

When it comes to shoes to wear in the heat, open-toe shoes or your best sandals are an obvious choice. Similarly with clothing, material still plays a role here, with natural cork and leather much better at regulating body temperature than vinyl or plastic designs, which can actually contribute to sweat build-up - making for a rather uncomfortable experience. If you want to wear closed-toe shoes or trainers, then look for trainers that have mesh panels to help with breathability, and make sure to opt for cotton socks as these will help with airflow.

What not to wear in the heat

Avoid synthetic fabrics in a heatwave as they will trap air and make for a much hotter and sweatier environment. Synthetic fabrics do not allow air to easily pass through, meaning a potential build-up of perspiration - not something any of us want. 

Tight fitting clothing will also stop air flowing through your clothes and reaching your skin, so where possible, avoid tailored clothes or anything too bodycon.

Is it better to wear shorts or pants in the heat

Shorts will expose more of your lower leg, giving greater opportunity for airflow. However, it is largely down to personal preference, as fabric and silhouette of both the pants and shorts play a key role in how cool or warm they are. 

It is best to avoid tight fitting clothing and heavy or synthetic fabrics. While jeans are made from cotton, due to their weight, they are best avoided in hot weather. On that basis, while denim shorts are associated with the summer, they could end up being warmer than a pair of linen palazzo pants.

When choosing between shorts or pants, regardless of length, look for breezy, looser fits and light and breathable fabrics to stay as cool as possible. 

Rivkie Baum
Fashion channel editor

Rivkie is a fashion editor, writer and stylist with twenty years' experience in the industry. Rivkie studied design and pattern cutting at the London College of Fashion, and fell in love with styling and journalism, and has covered fashion weeks in London, Paris and New York, as well as shooting editorial all over the world.

Specialising in plus size fashion, Rivkie has long championed that style is for everyBODY and has appeared on a host of radio stations and television shows, pushing for greater representation for plus size women and fashion throughout her career.