-1°C sits at the top of the freezing range (-10–-1°C) — one degree warmer and you are into very cold territory, so treat it as the lightest end of this band.
In an average year, -1°C turns up in January, February and December. Those months share this temperature, so their outfits carry over directly.
Compared with -2°C you can drop a layer, and from 0°C upward you can leave the outer layer at home more often.
What -1°C feels like in different conditions
- In wind-6°C
- With wind, -1°C feels closer to -6°C — that's the call for one more layer.
- When humid0°C
- High humidity pushes -1°C toward 0°C — look at breathability before thickness.
- Morning → afternoon-7 → 2°C
- On a swinging day, pick outerwear for -7°C and your base layer for 2°C.