Climate averages 1991–2020
Vantaa weather
in December.
A freezing month with moderate precipitation: the 10th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a freezing month in Vantaa: daytime highs average -0.2°C and nights cool to about -4.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 55 mm of precipitation on roughly 12 days, which makes December a month with moderate precipitation (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 5 h 57 min on an average December day.
The nearest other city in this atlas is Helsinki (15 km away). In December its highs average 0.1°C, about as warm as Vantaa, with 55 mm of precipitation.
Among the 13 cities listed in Finland, Vantaa ranks 5th of 13 for the warmest December highs and joint 10th of 13 for the driest December (precipitation, lowest first). The mean December high of those 13 cities is -1.3°C; Vantaa is 1.1°C warmer than that mean.
From December to January, average highs fall by 2.1°C to -2.3°C, and monthly precipitation falls from 55 mm to 48 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
Vantaa climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.3°C-6.7°C | -6.7°C | 48 | 10.9 | 6.77 h |
| February | -2.8°C-7.7°C | -7.7°C | 41 | 9.3 | 9.09 h |
| March | 1.2°C-5.1°C | -5.1°C | 37 | 8.5 | 11.712 h |
| April | 8.1°C0.0°C | 0.0°C | 37 | 8.7 | 14.615 h |
| May | 14.8°C5.9°C | 5.9°C | 44 | 8.9 | 17.217 h |
| June | 19.0°C10.9°C | 10.9°C | 72 | 11.7 | 18.819 h |
| July | 21.9°C14.2°C | 14.2°C | 76 | 11.9 | 18.118 h |
| August | 20.3°C13.3°C | 13.3°C | 76 | 12.3 | 15.716 h |
| September | 14.9°C9.0°C | 9.0°C | 57 | 10.4 | 13.013 h |
| October | 8.1°C3.7°C | 3.7°C | 59 | 11.1 | 10.210 h |
| November | 3.0°C-0.4°C | -0.4°C | 59 | 11.5 | 7.68 h |
| December, selected | -0.2°C-4.1°C | -4.1°C | 55 | 12.2 | 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 · 15 kmHigh 0.1°C · Low -3.2°C · 55 mm precipitation
- Espoo in DecemberFinland · 24 kmHigh 0.3°C · Low -3.0°C · 57 mm precipitation
- Lahti in DecemberFinland · 84 kmHigh -1.5°C · Low -5.2°C · 48 mm precipitation
- Tallinn in DecemberEstonia · 97 kmHigh 0.5°C · Low -2.9°C · 48 mm precipitation
- Kouvola in DecemberFinland · 111 kmHigh -1.6°C · Low -5.5°C · 54 mm precipitation
- Tampere in DecemberFinland · 150 kmHigh -1.5°C · Low -4.7°C · 46 mm precipitation
- Turku in DecemberFinland · 153 kmHigh 0.4°C · Low -3.5°C · 56 mm precipitation
- Lappeenranta in DecemberFinland · 191 kmHigh -2.0°C · Low -5.5°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 Vantaa) is explained once on the Vantaa year overview and on the Sources, method and limits page.
Helsinki lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.