This is real-coat weather. Between 0 and 5°C you can no longer fake it with a jacket-and-jumper combination that worked at 10°C. The outer layer needs either genuine insulation — down, quilting, a heavy wool overcoat — or a serious knit underneath doing half the job. The most reliable formula: base layer or heavy tee, substantial knit, insulated or heavyweight coat. Three layers, each one earning its place.
Damp cold beats dry cold — plan for it. At 2°C and drizzling, the air pulls heat out of you far faster than at −5°C and dry. If the forecast shows rain in this band, waterproofing jumps the queue: a shell or waxed jacket over your warm layers, waterproof footwear, and wool next to the skin because it keeps insulating when damp — the one thing cotton categorically will not do.
Wool is the workhorse of this band. A merino or lambswool crew under a coat covers the whole range; a cashmere rollneck replaces a scarf by sealing the neck on its own. Knits also buffer the indoor-outdoor swing better than padding does — you can wear them at a desk without cooking, which a mid-weight down layer rarely allows.
Hands, head and legs decide your comfort. The core is easy to keep warm at 3°C; it's the extremities that make the day feel cold. Gloves stop being optional below 5°C, and a beanie or wool cap holds a surprising share of your heat. Mind the ankle gap, too — cropped trousers with short socks leave bare skin at exactly shin-wind height, so boots and longer wool socks close it. This is also dress weather if you commit to the legs: a knit or heavier dress over opaque tights, or fleece-lined ones on a frost morning, with boots that come up the calf, is as warm as trousers and often warmer than thin ones. Bare legs are the one thing this band won't forgive.
Give your gear the overnight reset. Coats in this band work hard: hang them somewhere airy rather than crammed in the wardrobe, so the day's damp leaves the fill or the wool. Rotate two pairs of boots if you can — leather that dries fully between wears lasts years longer than leather that never quite does.
