Climate averages 1991–2020
Tallinn weather
in December.
A cold 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 cold month in Tallinn: daytime highs average 0.5°C and nights cool to about -2.9°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 48 mm of precipitation on roughly 11 days, which makes December a month with moderate precipitation (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 6 h 13 min on an average December day.
The nearest other city in this atlas is Helsinki (82 km away). In December its highs average 0.1°C, about as warm as Tallinn, with 55 mm of precipitation.
Among the 2 cities listed in Estonia, Tallinn ranks 1st of 2 for the warmest December highs and 2nd of 2 for the driest December (precipitation, lowest first). The mean December high of those 2 cities is 0.1°C; Tallinn is 0.5°C warmer than that mean.
From December to January, average highs fall by 2.0°C to -1.5°C, and monthly precipitation falls from 48 mm to 43 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
Tallinn climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.5°C-5.4°C | -5.4°C | 43 | 10.7 | 6.97 h |
| February | -1.9°C-6.4°C | -6.4°C | 35 | 9.3 | 9.29 h |
| March | 1.9°C-3.8°C | -3.8°C | 33 | 8.4 | 11.812 h |
| April | 8.7°C0.9°C | 0.9°C | 36 | 8.6 | 14.514 h |
| May | 14.6°C6.1°C | 6.1°C | 41 | 8.6 | 17.017 h |
| June | 18.6°C11.0°C | 11.0°C | 70 | 11.3 | 18.519 h |
| July | 21.5°C14.5°C | 14.5°C | 68 | 11.8 | 17.818 h |
| August | 20.3°C13.8°C | 13.8°C | 77 | 12.9 | 15.616 h |
| September | 15.3°C9.9°C | 9.9°C | 60 | 11.7 | 12.913 h |
| October | 8.8°C4.7°C | 4.7°C | 64 | 12.5 | 10.310 h |
| November | 3.6°C0.5°C | 0.5°C | 51 | 11.0 | 7.78 h |
| December, selected | 0.5°C-2.9°C | -2.9°C | 48 | 11.2 | 6.26 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 · 82 kmHigh 0.1°C · Low -3.2°C · 55 mm precipitation
- Espoo in DecemberFinland · 86 kmHigh 0.3°C · Low -3.0°C · 57 mm precipitation
- Vantaa in DecemberFinland · 97 kmHigh -0.2°C · Low -4.1°C · 55 mm precipitation
- Tartu in DecemberEstonia · 163 kmHigh -0.4°C · Low -3.9°C · 44 mm precipitation
- Turku in DecemberFinland · 179 kmHigh 0.4°C · Low -3.5°C · 56 mm precipitation
- Lahti in DecemberFinland · 179 kmHigh -1.5°C · Low -5.2°C · 48 mm precipitation
- Kouvola in DecemberFinland · 192 kmHigh -1.6°C · Low -5.5°C · 54 mm precipitation
- Tampere in DecemberFinland · 235 kmHigh -1.5°C · Low -4.7°C · 46 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 Tallinn) is explained once on the Tallinn year overview and on the Sources, method and limits page.