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When the thermostat crosses 35 degrees, dressing smart can feel like a battle against the elements. All you think about is how to survive the journey to work without arriving in a pool of sweat. 

But if you have an important meeting or client lunch, your professional reputation is on the line and stripping down or going all casual is not an option. You still want to look sharp. 

By combining modern fabric tech with classic tailoring tricks, you can stay cool, dry, and entirely unbothered.

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| So, how do you stay cool in a heat wave?

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Start with High-Tech Underwear

The foundation of hot-weather style is your base layer. Standard underwear traps body heat and locks in moisture, setting you up for failure before you even put your shirt on. You need advanced fabrics engineered specifically for temperature regulation.

Falke, one of Germany’s quality brands for tights and underwear offers

• Falke Daily Climate Control: Utilizing Outlast® technology (originally developed for NASA), these cotton-viscose blend undershirts actively absorb, store, and release body heat to maintain a constant, comfortable microclimate against your skin.

• Falke Ultralight-Cool: If you are dealing with maximum humidity and need the absolute lightest base layer possible, this range is the gold standard. It is engineered with ultra-thin, highly breathable technical fibers designed to instantly cool the skin's surface and dry at hyper-speed.

• Uniqlo AIRism: a line of lightweight, breathable, and moisture-wicking underwear made from micro-polyester fibres, designed to keep you cool and fresh 

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Upgrade Your Natural Fibres

Once your base layer is sorted, your main garments should be purely natural as they will allow your skin to breathe. Avoid polyester & polyacryl as you will quickly feel like in a sauna (imagine a plastic wrap around your body!). 

• Viscose & Silk: For blouses, dresses, or lightweight shirts, viscose and silk offer beautiful drapes that sit lightly off the skin, keeping air moving without clinging.

• Opt for blends
  
  • Cotton & Linen (The Smart Blend): Pure cotton is a classic choice, but pure linen gives it a sophisticated shine, feels cooler and has more moisture-wicking features than cotton. Whilst 100% linen is highly susceptible to severe creasing -  which can quickly look sloppy in a corporate environment, it’s best to go for a mix. A linen-cotton mix for trousers and blazers gives you the breezy breathability of linen with a more wrinkle-resistant cotton. 
  • For T-shirts or knit polos, a Linen-Silk blend offers a luxurious, premium texture that stays crisp and handles heat beautifully.

 I noticed that it can be hard to find clothes that are 100% made of natural fibres. If this is the case, always go for a majority of natural fibres.

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Think in Layers: The London "tube vs. air con" dilemma

Commuting in a major city during a heatwave is always a unique challenge. You might face the sweltering, un-air-conditioned depths of the London Underground (where temperatures on lines like the Central or Northern can spike well above 35 degrees), only to step into a freezing, blasting office air conditioning system twenty minutes later.

The secret to surviving this variance is strategic layering:

• The Commute: Travel light. Wear your high-performance undershirt with a loose, breathable linen-blend shirt or blouse. Keep your collar open and top buttons undone to let body heat escape during transit.
• The Arrival: Keep your structured blazer, lightweight jacket, or formal cardigan at the office, or carry it in a breathable garment bag. Once you step out of the humid transit tunnels and into the chilled office air con, layer up to restore your sharp, executive silhouette.

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Ever heard of Sweat Shields?

Even with perfect fabrics, some days are just too humid to avoid sweating entirely. If you are wearing premium tailoring or delicate silk that you want to protect from unsightly moisture marks and dry-cleaning wear-and-tear, look to old-school haberdashery secrets.

Pro Tip: Invest in Prym Sew-In Dress Shields.

These are 100% absorbent cotton pads that you sew or safety-pin discreetly into the armpits of your jackets, blazers, or fine shirts. They act as a hidden barrier, absorbing underarm sweat completely and protecting your high-quality outer garments from staining or odor. They are washable, reusable, and completely invisible from the outside.

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My Golden rule for Summer Style?

When you can't rely on heavy layers, three-piece suits, or complex styling to make an impression, your clothing quality and grooming have to do the heavy lifting. Lean into immaculate footwear, crisp fabric blends, and sharp under-layers. When the weather gets tough, the smart get strategic.

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