Climate averages 1991–2020
Weather in Finland in December
In December, average daytime highs across the 13 cities listed in Finland range from -3.3°C in Joensuu to 0.4°C in Turku. Monthly precipitation ranges from 44 mm in Oulu to 57 mm in Espoo.
Long-term climate patterns, not a forecast for a particular trip.
City by city
December in Finland
| City | Average highHigh / low | Average low | Precipitation mm | Wet days |
|---|---|---|---|---|
| Helsinki | 0.1°C-3.2°C | -3.2°C | 55 | 12.2 |
| Espoo | 0.3°C-3.0°C | -3.0°C | 57 | 12.4 |
| Tampere | -1.5°C-4.7°C | -4.7°C | 46 | 11.0 |
| Vantaa | -0.2°C-4.1°C | -4.1°C | 55 | 12.2 |
| Oulu | -2.9°C-7.2°C | -7.2°C | 44 | 10.8 |
| Turku | 0.4°C-3.5°C | -3.5°C | 56 | 11.6 |
| Jyväskylä | -2.2°C-6.0°C | -6.0°C | 46 | 11.4 |
| Kuopio | -2.8°C-6.3°C | -6.3°C | 51 | 12.5 |
| Lahti | -1.5°C-5.2°C | -5.2°C | 48 | 11.6 |
| Pori | 0.4°C-2.9°C | -2.9°C | 52 | 11.5 |
| Joensuu | -3.3°C-6.8°C | -6.8°C | 53 | 12.7 |
| Kouvola | -1.6°C-5.5°C | -5.5°C | 54 | 11.7 |
| Lappeenranta | -2.0°C-5.5°C | -5.5°C | 52 | 11.3 |
A wet day is a local calendar day with at least 1 mm of precipitation.