December weather in Helsinki, Finland
Averages from 155 days in December across 2020–2024.
Typical conditions
| Average high | 0.1°C |
|---|---|
| Average low | -4°C |
| Average mean | -1.8°C |
| Total precipitation | 350 mm |
| Rainy days | 108 |
| Average precipitation hours | 6.8 h |
| Average max wind speed | 23.5 km/h |
| Average sunshine | 1.1 h/day |
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