4.5 Tog Summer Duvets

A 1.5 tog duvet is the lightest option available, it provides almost no insulation and is designed purely for the hottest nights or for sleepers who run very warm. A 4.5 tog duvet offers a little more warmth and is suitable for the full summer season in most UK homes, including cooler evenings in June and September. If your bedroom stays above 20°C at night during summer, 1.5 tog is likely the more comfortable choice. If your bedroom drops below that, or you prefer the feeling of a duvet with a little more substance, 4.5 tog will cover the season more comfortably.

If you overheat at night, a natural filling will generally regulate temperature more effectively than synthetic. Wool is one of the best options for hot sleepers, it actively wicks moisture away from the body, which helps you cool down rather than trapping heat. Mulberry silk is similarly breathable and lightweight, with natural temperature-regulating properties that keep you cool in warm weather. White goose down is extremely light for its warmth level, allowing air to circulate through the duvet rather than being trapped. Synthetic microfibre at 1.5 tog is also effective for hot sleepers, it has almost no thermal insulation, so very little heat is retained.

You can, and some people prefer to sleep under a flat sheet or just a duvet cover during heatwaves. The difference a summer duvet makes is in airflow and moisture management. A 1.5 or 4.5 tog duvet, particularly one with a natural filling like wool or silk, helps draw perspiration away from the body rather than leaving it against the skin, which is what happens with a sheet alone. A lightweight duvet also provides a gentle weight that many people find helps them fall asleep more easily. If you find even a 1.5 tog too warm on the hottest nights, sleeping under just a cotton duvet cover with no duvet inside is a good compromise.

A synthetic microfibre summer duvet is the most practical choice if you suffer from hay fever or dust mite allergies. Microfibre does not provide a hospitable environment for dust mites, can be washed at 40°C or higher to remove allergens, and dries quickly - reducing the chance of damp conditions that encourage mite growth. Belledorm's microfibre summer duvets are fully hypoallergenic and box-quilted to keep the filling evenly distributed. If you prefer a natural option, wool and Mulberry silk are both naturally resistant to dust mites. Using a duvet protector underneath your duvet cover adds a further barrier against allergens.

Most people in the UK switch to a summer duvet between late April and mid-May, once overnight temperatures are consistently mild and bedrooms are staying above 16–18°C. The clearest sign is how you feel during the night - if you are pushing your 10.5 tog spring duvet aside, waking up warm, or sleeping with a leg or arm outside the covers, it is time to switch. You do not need to wait for full summer weather. Moving to a 4.5 tog early and layering a light throw on top for the occasional cool night is more comfortable than staying under a heavier duvet for too long.

Synthetic microfibre summer duvets can be machine washed at 40°C on a gentle cycle. Use a large-capacity machine, a standard domestic drum may not have enough space for a double or larger duvet to move freely during the wash, which can leave detergent trapped in the filling. Tumble dry on a low setting until completely dry to prevent dampness. Natural-filled summer duvets vary by filling: wool and silk duvets typically require professional dry cleaning or specialist laundering - always follow the care label. White goose down and feather and down duvets can sometimes be machine washed on a delicate cycle, but check the care instructions for your specific product first.

Belledorm summer duvets are available in single (135 × 200 cm), double (200 × 200 cm), king size (230 × 220 cm), super king (260 × 220 cm), and emperor (290 × 235 cm). Choose the size that matches your duvet cover. If you prefer extra overhang at the sides of the bed, you can go one size up - for example, using a super king summer duvet on a king size bed gives more drape, which some people find more comfortable. All sizes are available in both the 1.5 tog microfibre and the 4.5 tog range across natural and synthetic fillings.

A lightweight wool duvet at 4.5 tog is well suited to summer. Wool regulates temperature differently from synthetic and down fillings - it absorbs and releases moisture as your body temperature changes during the night, which helps prevent the overheating and then chilling cycle that can disrupt sleep. A 4.5 tog wool duvet does not trap heat in the same way as synthetic at the same tog rating, because the natural fibre allows air to circulate through the filling. If you tend to fluctuate between feeling warm and cool during the night, wool is one of the most effective fillings for maintaining a steady temperature.

Switching to a lighter, more breathable duvet cover for summer can make a noticeable difference. A cotton percale duvet cover has a crisp, cool feel and an open weave that allows more air to circulate than a sateen. Bamboo duvet covers are also naturally temperature-regulating and moisture-wicking. If you currently use a high thread count sateen cover (600TC or above), the denser weave may retain more warmth than you want in summer - consider dropping to a 200 or 300 thread count percale for the warmer months. The duvet cover you sleep under affects how warm you feel just as much as the duvet itself.