Weather in Helsinki, Uusimaa, Finland in December
In an average December, Helsinki sees a daily high around 1°C and a low around -2°C, based on 1981–2026 of local climate records.
| Average high | 1°C |
|---|---|
| Typical high range | -5°C to 5°C |
| Average low | -2°C |
| Typical low range | -8°C to 2°C |
| Average daily precipitation | 3 mm |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
8°C
2011-12-26
Lowest
-18°C
2002-12-31
Low
Highest
7°C
2015-12-06
Lowest
-22°C
2002-12-31
Feels-like
Highest
2°C
2015-12-06
Lowest
-35°C
2002-12-30
Humidity
Highest
7.5 g/m³
2015-12-06
Lowest
1.1 g/m³
2002-12-31
Wind
Highest
60 km/h
2011-12-26
Lowest
7 km/h
1997-12-31
Precip
Wettest
128 mm
2011
Driest
15 mm
2002
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