Getting Your Bedroom Ready for Summer: A Simple Framework

British summers tend to arrive without warning. A grey week in early June, then a Saturday afternoon of 27°C, and suddenly the bedroom feels three sizes too small. The flat that was charming in April now traps heat well past midnight.

A handful of things, done before the heat arrives, save the worst of it.

Start with the window, not the bed

Direct sunlight on glass loads the room with heat that stays in the walls and mattress for hours. Blackout curtains, a closed window in the hottest part of the day, and only opening up once the outside air is genuinely cooler than the inside — usually after eleven in London. This single change makes more difference than anything else.

Change the duvet, properly

A winter-weight duvet in June is the most common cause of sleep loss in summer. (See time for the big duvet change for the swap-over logic, and the difference between winter and summer duvets for the tog story.) Most people keep theirs in too long, partly because the difference between a 4.5 tog summer duvet and a 10.5 tog year-round duvet doesn't seem dramatic on paper. In bed, at 24°C, the difference is the night.

Bedding is not a small detail

The fabric against your skin matters more than what's above it. Lighter shades like Coco White or Sage Green also reflect light back into the room rather than absorbing it. Polyester traps moisture. Cotton absorbs but releases it slowly, which is why you wake up clammy at four. Bamboo viscose moves moisture away from the skin and dries faster — the kind of thing you only notice when it's working, but really notice when it isn't.

Choose lighter colours

Dark pillowcases hold more heat, partly through physics, partly because they look warm. A pale shade — cream, soft sage, dusty rose — does the opposite. Worth knowing if you're refreshing your bedding anyway.

Wash everything before the season starts

Sheets, pillowcases and the lighter duvet should be washed at 30°C and aired before the first hot night. Pollen, dust and skin cells accumulated over winter don't simply leave on their own, and a fresh smell does psychological work as much as physical.

Check the age of your pillow

Memory foam pillows hold heat. Bamboo or latex pillows breathe properly. Whatever you have, the rule is three years maximum — after that the structure has gone regardless of how it feels.

You don't need to do all six at once. The pillow and the sheets give you the most return for the least effort. The window discipline is free.

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