Climate averages 1991–2020
Gdańsk weather
in December.
A cold, moderately wet month: the 10th warmest and the joint 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Gdańsk: daytime highs average 3.0°C and nights cool to about -0.6°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 40 mm of rain on roughly 10 days, which makes December a moderately wet month (the joint 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 25 min on an average December day.
The nearest other city in this atlas is Gdynia (20 km away). In December its highs average 3.2°C, about as warm as Gdańsk, with 52 mm of rain.
Among the 60 cities listed in Poland, Gdańsk ranks joint 12th of 60 for the warmest December highs and joint 7th of 60 for the driest December (rainfall, lowest first). The mean December high of those 60 cities is 2.4°C; Gdańsk is 0.5°C warmer than that mean.
From December to January, average highs fall by 1.4°C to 1.6°C, and monthly precipitation falls from 40 mm to 35 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
Gdańsk climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.6°C-2.2°C | -2.2°C | 35 | 10.0 | 8.08 h |
| February | 2.5°C-2.1°C | -2.1°C | 29 | 8.5 | 9.710 h |
| March | 6.2°C-0.2°C | -0.2°C | 36 | 10.0 | 11.812 h |
| April | 11.9°C3.5°C | 3.5°C | 40 | 9.6 | 14.014 h |
| May | 16.7°C8.1°C | 8.1°C | 59 | 11.3 | 16.016 h |
| June | 20.1°C12.1°C | 12.1°C | 67 | 12.4 | 17.117 h |
| July | 22.3°C14.8°C | 14.8°C | 84 | 12.9 | 16.617 h |
| August | 22.3°C14.8°C | 14.8°C | 69 | 12.0 | 14.915 h |
| September | 17.8°C11.4°C | 11.4°C | 51 | 9.3 | 12.813 h |
| October | 12.2°C7.0°C | 7.0°C | 46 | 10.1 | 10.611 h |
| November | 6.7°C2.9°C | 2.9°C | 37 | 9.2 | 8.69 h |
| December, selected | 3.0°C-0.6°C | -0.6°C | 40 | 9.7 | 7.47 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
- Gdynia in DecemberPoland · 20 kmHigh 3.2°C · Low -0.3°C · 52 mm rain
- Elbląg in DecemberPoland · 54 kmHigh 2.8°C · Low -0.7°C · 52 mm rain
- Grudziądz in DecemberPoland · 97 kmHigh 2.5°C · Low -1.5°C · 42 mm rain
- Słupsk in DecemberPoland · 106 kmHigh 3.4°C · Low 0.2°C · 66 mm rain
- Kaliningrad in DecemberRussia · 126 kmHigh 2.4°C · Low -1.4°C · 49 mm rain
- Olsztyn in DecemberPoland · 136 kmHigh 1.2°C · Low -2.5°C · 45 mm precipitation
- Fordon in DecemberPoland · 138 kmHigh 2.7°C · Low -1.2°C · 40 mm rain
- Bydgoszcz in DecemberPoland · 143 kmHigh 2.7°C · Low -1.2°C · 39 mm rain
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 Gdańsk) is explained once on the Gdańsk year overview and on the Sources, method and limits page.