The hidden risks of drying clothes in a heatwave, and the expert tips you need to know
You might think the summer sunshine is the perfect drying tool, but an expert warning reveals why a heatwave could actually be destroying your wardrobe
As temperatures soar across the country, British gardens are filled with the welcome sight of washing lines. While mastering how to dry laundry in hot weather is an ideal eco-friendly solution, intense summer heatwaves mean that brilliant sunshine can actually become an adversary to your wardrobe.
Learning exactly how to dry laundry outside when temperatures spike ensures your home routine runs smoothly while protecting your textile investments. A few simple adjustments to your outdoor routine can save your favourite garments from unnecessary wear and tear.
Before you rush out to fill the washing line, it helps to understand why the midday heat requires a more cautious approach. Taking a few strategic steps now will keep your clothes looking newer for longer.
Five heatwave drying tips to successfully dry your laundry outside
‘Most people assume sunshine is the perfect drying tool, but during a heatwave there are a few hidden risks that could leave your clothes faded, damaged or covered in allergens,’ says cleaning expert and TV presenter Lynsey Crombie, better known as the Queen of Clean.
To help you navigate the soaring temperatures, Lynsey shares five crucial things to watch out for, along with her top tips for protecting your wardrobe.
1. Bright colours can fade in UV, so protect colourful garments
Strong UV rays can act like a natural bleach, causing vibrant colours to lose their intensity over time. Reds, blacks and navy items are particularly vulnerable to this intense sun exposure, as the harsh rays rapidly break down the chemical bonds in textile dyes, leaving your favourite garments looking prematurely aged and washed out. ‘Turn coloured garments inside out and dry them in a shaded area where possible,’ advises Crombie.
This is the perfect situation to use a lightweight, portable tiered clothes airer or a freestanding rotary washing line with a ground spike that allows you to easily move your laundry into the shade as the sun shifts.
2. Keep elasticated wardrobe staples out of direct heat
Prolonged exposure to intense heat can affect the elasticity in clothing such as bras, leggings, swimwear and sportswear, causing them to lose their shape more quickly. When these synthetic materials are subjected to high thermal conditions on the washing line, the elastic polymers stretch out and degrade, meaning your essential wardrobe staples can permanently warp and lose their supportive fit.
To prevent heavy pegs from stretching out these delicate elastic areas, consider using a dedicated sock and delicates hanger with soft-grip pegs hung in a breezy, shaded spot.
3. Shake fabrics vigorously and catch them before they bake
While the heat may dry washing in record time, clothes and towels that dry too quickly can end up feeling rough and crunchy rather than soft and fluffy. When water evaporates almost instantly from the fabric due to extreme heat, it causes the individual cotton fibres to flatten, lock together, and harden, completely robbing you of that luxurious, soft feeling.
‘To combat this, keep a close eye on the line and aim to bring your items in just before they become completely baked by the sun, or give them a vigorous shake before hanging to loosen the fibres,’ says Crombie.
4. Check the care labels and protect delicate threads
Fine materials require a far gentler approach in extreme weather. Silk, lace and certain synthetic fabrics can become brittle or distorted when left in direct sunlight for extended periods. The intense radiation can physically weaken the delicate structural threads, making them prone to tearing, shrinking, or fraying beyond repair.
‘Check care labels and opt for shaded drying when dealing with delicate items,’ says Crombie. For maximum protection, lay your finest pieces flat on a mesh laundry drying net away from direct sunlight, or slip them into breathable cotton mesh laundry bags before hanging.
5. Dry bedding and linen indoors to outsmart high pollen counts
For hay fever sufferers, drying laundry outside during high-pollen days can bring unwanted allergens straight into the home. Bedding, in particular, can collect pollen particles that may trigger symptoms overnight. Because damp fabrics act like a magnet for microscopic environmental particles floating in the warm breeze, you can inadvertently sleep right on top of the very triggers causing your seasonal allergies.
The secret to mastering the summer laundry routine isn’t staying indoors – it’s about being clever with your timing and placement. Pairing your outdoor strategy with the best non-toxic laundry detergents will ensure your clothes remain free from harsh chemical residues that bake into the fabrics under high temperatures, keeping your garments genuinely fresh and skin-friendly.
‘There’s no need to avoid drying clothes outside altogether, but it’s important to be a little more strategic during a heatwave,’ adds Crombie. ‘Save direct sunshine for white items and towels, keep coloured and delicate garments in the shade, and always bring washing in as soon as it’s dry.’
With more hot weather forecast this summer, making these few simple changes to your laundry routine will ensure your wardrobe stays vibrant, beautifully soft, and perfectly preserved for years to come. For more brilliant, time-saving household advice, you can discover Lynsey’s full daily routine in her bestselling book, The 15-Minute Clean: The Quickest Way To A Sparkling Home from Amazon.
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