Why silk is the fibre worth reaching for when the temperature climbs — the science, the history, and the small ritual of dressing well in a heatwave.
There is a particular kind of summer morning — the kind where the air stands still, the light comes in white, and even the linen in the drawer feels heavy — when the only fibre that will do is silk.
It is not sentimentality. It is science.
THE COOLEST FIBRE IN THE DRAWER
Mulberry silk is one of the few natural fibres that regulates temperature in both directions. In summer, it draws heat away from the skin. In winter, it holds warmth close. The structure of the silk filament — a fine triangular prism, spun continuously by the Bombyx mori silkworm — reflects light and disperses heat with a quiet efficiency that no synthetic has ever quite matched.
Cotton absorbs moisture and holds it. Linen breathes well but creases the moment you sit down. Synthetics trap heat against the body. Silk moves air across the skin, wicks perspiration, and dries almost instantly — while remaining light as breath against the body.
A FIBRE MADE FOR HOT COUNTRIES
Silk was not, as is often assumed, a fibre for European drawing rooms. It was born in the summers of central China more than four thousand years ago, worn by imperial households across the sweltering months of the northern plains. It travelled the Silk Road not as a curiosity but as a solution — a fabric that made the heat bearable, and made bearing it look effortless.
The women of the Tang court wore silk in July. The merchants of the Silk Road wore silk across the Taklamakan. The heirloom pieces of the Palace Museum — the ones our craft partners in Beijing still study today — are almost all summer garments.
The best fibre for a heatwave is the one that has been solving the problem for four millennia.
HOW TO WEAR SILK IN THE HEAT
A few small kindnesses will let your silk work as it should.
Loose over close. Silk cools by moving air. A relaxed cut across the shoulders and back will do more than any air-conditioning setting.
Undyed or light colours in direct sun. Deep colours are exquisite in the evening, but pale ivories, creams, and softest blues reflect the day's heat rather than absorb it.
Skin, not layers. Silk performs best against bare skin — a single silk shirt worn open at the collar will feel cooler than any linen layered over a t-shirt.
Rinse and rest. After a long, hot day, hang your silk somewhere airy overnight. The fibre refreshes itself. You will not need to wash it as often as you think.
THE RITUAL
There is an old Chinese saying that a silk shirt in July is worth two in December. It captures something the modern wardrobe has largely forgotten: that the right fibre, cut well, worn lightly, is a form of quiet air-conditioning that neither electricity nor engineering can replicate.
When the next heatwave arrives, reach for silk. It will do more work than you expect — and ask for less in return.
Discover the Summer Edit — our lightest silks in creams, blues, and pale prints, hand-crafted in Beijing and cut to move with the season.