Climate averages 1991–2020
Espoo weather
in December.
A cold month with moderate precipitation: the 10th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Espoo: daytime highs average 0.3°C and nights cool to about -3.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 57 mm of precipitation on roughly 12 days, which makes December a month with moderate precipitation (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 5 h 59 min on an average December day.
The nearest other city in this atlas is Helsinki (16 km away). In December its highs average 0.1°C, about as warm as Espoo, with 55 mm of precipitation.
Among the 13 cities listed in Finland, Espoo ranks 3rd of 13 for the warmest December highs and 13th of 13 for the driest December (precipitation, lowest first). The mean December high of those 13 cities is -1.3°C; Espoo is 1.6°C warmer than that mean.
From December to January, average highs fall by 2.2°C to -1.9°C, and monthly precipitation falls from 57 mm to 50 mm.
The annual picture
December in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Espoo climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.9°C-5.8°C | -5.8°C | 50 | 11.1 | 6.77 h |
| February | -2.7°C-6.9°C | -6.9°C | 41 | 9.0 | 9.19 h |
| March | 0.7°C-4.4°C | -4.4°C | 37 | 8.2 | 11.712 h |
| April | 6.7°C0.5°C | 0.5°C | 37 | 8.8 | 14.515 h |
| May | 12.9°C6.2°C | 6.2°C | 43 | 8.7 | 17.217 h |
| June | 17.1°C11.0°C | 11.0°C | 66 | 11.4 | 18.819 h |
| July | 20.6°C14.7°C | 14.7°C | 69 | 11.2 | 18.118 h |
| August | 19.5°C14.1°C | 14.1°C | 70 | 12.2 | 15.716 h |
| September | 14.5°C10.0°C | 10.0°C | 55 | 10.1 | 13.013 h |
| October | 8.2°C4.7°C | 4.7°C | 59 | 10.8 | 10.210 h |
| November | 3.4°C0.5°C | 0.5°C | 59 | 11.5 | 7.68 h |
| December, selected | 0.3°C-3.0°C | -3.0°C | 57 | 12.4 | 6.06 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Helsinki in DecemberFinland · 16 kmHigh 0.1°C · Low -3.2°C · 55 mm precipitation
- Vantaa in DecemberFinland · 24 kmHigh -0.2°C · Low -4.1°C · 55 mm precipitation
- Tallinn in DecemberEstonia · 86 kmHigh 0.5°C · Low -2.9°C · 48 mm precipitation
- Lahti in DecemberFinland · 103 kmHigh -1.5°C · Low -5.2°C · 48 mm precipitation
- Kouvola in DecemberFinland · 134 kmHigh -1.6°C · Low -5.5°C · 54 mm precipitation
- Turku in DecemberFinland · 134 kmHigh 0.4°C · Low -3.5°C · 56 mm precipitation
- Tampere in DecemberFinland · 151 kmHigh -1.5°C · Low -4.7°C · 46 mm precipitation
- Pori in DecemberFinland · 210 kmHigh 0.4°C · Low -2.9°C · 52 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Espoo) is explained once on the Espoo year overview and on the Sources, method and limits page.