Summer Bed Sheets

Overheating at night during summer is usually caused by a combination of warm ambient room temperature, a duvet that retains too much heat, and sheets that do not allow moisture or warmth to escape. Your body needs to drop its core temperature by roughly 1–2°C to enter deep sleep, and bedding that traps heat makes this harder.

Sheets can make a meaningful difference. Fabrics with an open weave structure, such as cotton percale, allow warm air to move away from the body rather than being held against the skin. Natural fibres like cotton, bamboo, and linen also absorb and release moisture, which helps cool the skin through evaporation. Synthetic fabrics and very high thread count sateen weaves tend to trap more heat because their tighter construction restricts airflow. If you are regularly waking hot during summer, switching to a lower thread count cotton percale or bamboo fitted sheet is one of the simplest changes you can make.

Both bamboo and cotton are good choices for summer, but they perform differently. Cotton percale has a crisp, cool feel and excellent airflow due to its open weave, it feels fresh immediately when you get into bed. Bamboo has a naturally silkier, smoother feel and is particularly effective at wicking moisture away from the skin, which makes it well suited to sleepers who perspire during the night.

Cotton percale tends to feel cooler to the touch on initial contact, while bamboo regulates temperature more actively as you sleep. If you prefer a crisp, hotel-style feel, cotton percale is the better match. If you prefer a softer, more fluid fabric that manages moisture through the night, bamboo is worth considering. Both are natural fibres that breathe well and can be machine washed regularly an important consideration during summer when more frequent washing is common.

For summer, a thread count between 200 and 400 in a percale weave is the most practical range. Lower thread counts in percale create a more open fabric structure, which allows more air to circulate, this is why a 200TC cotton percale can feel significantly cooler than a 600TC or 1000TC sateen, despite the lower number.

Higher thread counts (600+) in a sateen weave produce a denser, heavier fabric that drapes more closely against the body and retains more warmth. This can feel too heavy on hot summer nights, particularly in bedrooms that are difficult to keep cool. If you value a smooth feel but want something suitable for summer, Egyptian cotton at 200TC in a percale weave offers a cooler alternative with the softness of long-staple cotton. Thread count alone does not determine how cool a sheet will feel, the weave type matters equally.

Yes, sleeping under a flat sheet without a duvet is a practical option during the warmest weeks of the UK summer, particularly during heatwaves or in south-facing bedrooms that retain heat overnight. A cotton percale or bamboo flat sheet provides a light layer that covers the body without trapping significant warmth.

Many people find they still want something covering them while they sleep, even when the temperature is high, a flat sheet provides that sense of comfort without the insulating weight of a duvet. If the nights are warm but not extremely hot, you can also use a flat sheet as a mid-layer between your body and a very light (1.5 tog) summer duvet, giving you the option to push the duvet aside without being uncovered entirely. Belledorm's flat sheets are available in cotton percale, Egyptian cotton, and bamboo across all standard UK sizes.

During summer, washing your sheets every week is recommended. Warmer temperatures cause the body to perspire more during sleep, even without noticeable sweating, and this moisture, combined with skin cells and natural body oils, accumulates in sheet fabric more quickly than in cooler months.

Cotton and bamboo sheets are both machine washable and tolerate frequent laundering well. Washing at 40°C is sufficient for regular maintenance; a 60°C wash every few weeks helps remove deeper-set bacteria and allergens. Avoid fabric softener, as it coats the fibres and reduces their natural breathability and moisture-wicking properties, both of which are particularly important during summer. If you rotate between two sets of summer sheets, each set gets a longer rest between washes, which extends their lifespan while keeping your bed consistently fresh.

Changing your sheets to a lighter fabric makes a noticeable difference, but for the best temperature regulation in summer, adjusting both your sheets and your duvet is the most effective approach. A 4.5 tog duvet is the standard recommendation for summer in the UK, significantly lighter than the 10.5 or 13.5 tog duvets used in autumn and winter. We also have our new 1.5 tog duvet.

If you prefer not to buy a separate summer duvet, you can use a lightweight flat sheet as your primary covering on the warmest nights, or pair your existing duvet with cooler sheets (cotton percale or bamboo) and leave the duvet folded back on particularly warm evenings. Belledorm stocks summer-weight duvets in 4.5 tog alongside the full summer sheet range, so you can adjust both layers for the season.

The coolest-feeling fabric in the Belledorm summer range is 200 thread count cotton percale, the open weave structure and lightweight construction make it the most breathable option for hot nights. It has a crisp, matte feel that sits lightly on the skin rather than draping heavily.

Bamboo is the strongest performer for active temperature regulation, its fibres absorb and release moisture more efficiently than cotton, which helps manage the micro-climate between your body and the sheet throughout the night. For those who prefer the feel of Egyptian cotton, the 200TC Egyptian cotton percale offers the same crisp coolness as standard cotton percale but with a smoother, more consistent surface due to the longer staple fibres. Each fabric has a different feel, and the right choice depends on whether you prioritise crispness (percale), moisture management (bamboo), or smoothness (Egyptian cotton).

Yes, UK double bed sheet dimensions are standardised: fitted sheets are 135cm x 190cm, flat sheets are 230cm x 275cm, and duvet covers are 200cm x 200cm. Belledorm's double range follows these standard UK dimensions throughout.

The one variable is fitted sheet depth, this is not standardised and varies by product and brand. Always check the box depth (30cm, 38cm, or 46cm) against your mattress measurement before purchasing. One common point of confusion is the duvet cover: a double duvet cover (200cm x 200cm) is square, not rectangular, this is correct and standard across the UK industry. If you are buying bedding as a gift or for a property you cannot measure, standard UK double dimensions apply to the overwhelming majority of double beds manufactured since 2000.