Climate averages 1991–2020
Joensuu 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 Joensuu: daytime highs average -3.3°C and nights cool to about -6.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 53 mm of precipitation on roughly 13 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 07 min on an average December day.
The nearest other city in this atlas is Kuopio (111 km away). In December its highs average -2.8°C, about as warm as Joensuu, with 51 mm of precipitation.
Among the 13 cities listed in Finland, Joensuu ranks 13th of 13 for the warmest December highs and 8th of 13 for the driest December (precipitation, lowest first). The mean December high of those 13 cities is -1.3°C; Joensuu is 2.0°C cooler than that mean.
From December to January, average highs fall by 2.7°C to -6.0°C, and monthly precipitation falls from 53 mm to 41 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
Joensuu climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -6.0°C-9.9°C | -9.9°C | 41 | 10.7 | 6.06 h |
| February | -6.4°C-10.2°C | -10.2°C | 35 | 9.5 | 8.79 h |
| March | -2.0°C-6.3°C | -6.3°C | 34 | 9.0 | 11.712 h |
| April | 3.9°C-2.0°C | -2.0°C | 32 | 7.9 | 14.815 h |
| May | 11.2°C4.4°C | 4.4°C | 49 | 9.3 | 17.818 h |
| June | 17.1°C11.5°C | 11.5°C | 75 | 12.7 | 19.820 h |
| July | 20.2°C14.9°C | 14.9°C | 85 | 12.7 | 18.919 h |
| August | 18.1°C13.6°C | 13.6°C | 82 | 13.2 | 16.116 h |
| September | 12.4°C8.8°C | 8.8°C | 68 | 11.9 | 13.113 h |
| October | 5.2°C2.7°C | 2.7°C | 63 | 12.4 | 10.010 h |
| November | 0.0°C-2.6°C | -2.6°C | 55 | 11.6 | 7.07 h |
| December, selected | -3.3°C-6.8°C | -6.8°C | 53 | 12.7 | 5.15 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
- Kuopio in DecemberFinland · 111 kmHigh -2.8°C · Low -6.3°C · 51 mm precipitation
- Lappeenranta in DecemberFinland · 190 kmHigh -2.0°C · Low -5.5°C · 52 mm precipitation
- Jyväskylä in DecemberFinland · 212 kmHigh -2.2°C · Low -6.0°C · 46 mm precipitation
- Vyborg in DecemberRussia · 217 kmHigh -1.4°C · Low -5.0°C · 59 mm precipitation
- Kouvola in DecemberFinland · 251 kmHigh -1.6°C · Low -5.5°C · 54 mm precipitation
- Petrozavodsk in DecemberRussia · 254 kmHigh -3.4°C · Low -7.2°C · 41 mm precipitation
- Lahti in DecemberFinland · 281 kmHigh -1.5°C · Low -5.2°C · 48 mm precipitation
- Saint Petersburg in DecemberRussia · 298 kmHigh -1.6°C · Low -5.0°C · 49 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 Joensuu) is explained once on the Joensuu year overview and on the Sources, method and limits page.