Helsinki weather in January
January in Helsinki: freezing, a little rain, with clean air — one of the weakest months to visit.
#12 of 12 months in Helsinki · #577 of 604 destinations to visit in January · comfort 30/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Helsinki climate normals — January
| Daytime high | 0°C / 31°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -4°C / 24°F | |
| Feels like (high) | -5°C / 23°F | |
| Rainfall | 77 mm / 3 in | 🌦 some rain |
| Rainy days | 16 days | |
| Humidity | 90% | 💦 very humid |
| Dew point | -4°C / 25°F | |
| Sunshine | 1.2 h/day | |
| Daylight | 6.8 h | |
| Wind | 22 km/h / 13 mph | |
| Snowfall | 48.1 cm / 18.9 in | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Helsinki in January — FAQ
- Is January a good time to visit Helsinki?
- January in Helsinki: freezing, a little rain, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Helsinki on SeasonMap's comfort score (30/100).
- What is the weather like in Helsinki in January?
- In January, Helsinki averages a daily high of -0.4°C and a low of -4.3°C, with about 77.2 mm of rain over roughly 16.2 rainy days.
- What is the air quality in Helsinki in January?
- Helsinki has a mean US Air Quality Index of about 30 in January.
- Does it snow in Helsinki in January?
- Helsinki sees roughly 48.1 cm of snowfall in January.