Climate averages 1991–2020
Koszalin weather
in January.
A cold, moderately wet month: the coolest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Koszalin: daytime highs average 2.1°C and nights cool to about -1.6°C. By daytime temperature it is the coolest month of the year.
Expect about 54 mm of rain on roughly 12 days, which makes January a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 59 min on an average January day.
The nearest other city in this atlas is Słupsk (63 km away). In January its highs average 2.1°C, about as warm as Koszalin, with 59 mm of rain.
Among the 60 cities listed in Poland, Koszalin ranks joint 7th of 60 for the warmest January highs and 57th of 60 for the driest January (rainfall, lowest first). The mean January high of those 60 cities is 1.1°C; Koszalin is 0.9°C warmer than that mean.
From January to February, average highs rise by 0.9°C to 3.0°C, and monthly rainfall falls from 54 mm to 44 mm.
The annual picture
January in context
Monthly rainfall
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
Koszalin climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 2.1°C-1.6°C | -1.6°C | 54 | 11.7 | 8.08 h |
| February | 3.0°C-1.5°C | -1.5°C | 44 | 10.3 | 9.710 h |
| March | 6.3°C0.1°C | 0.1°C | 49 | 10.3 | 11.812 h |
| April | 11.8°C3.8°C | 3.8°C | 38 | 8.9 | 14.014 h |
| May | 16.2°C8.2°C | 8.2°C | 56 | 10.8 | 16.016 h |
| June | 19.2°C12.0°C | 12.0°C | 71 | 12.0 | 17.117 h |
| July | 21.6°C14.6°C | 14.6°C | 90 | 13.3 | 16.617 h |
| August | 21.6°C14.8°C | 14.8°C | 78 | 13.4 | 14.915 h |
| September | 17.4°C11.5°C | 11.5°C | 68 | 12.1 | 12.813 h |
| October | 12.2°C7.3°C | 7.3°C | 66 | 12.5 | 10.611 h |
| November | 6.9°C3.2°C | 3.2°C | 53 | 11.8 | 8.69 h |
| December | 3.3°C-0.1°C | -0.1°C | 58 | 12.4 | 7.57 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
January in nearby cities
- Słupsk in JanuaryPoland · 63 kmHigh 2.1°C · Low -1.4°C · 59 mm rain
- Stargard in JanuaryPoland · 121 kmHigh 2.3°C · Low -2.0°C · 49 mm rain
- Piła in JanuaryPoland · 122 kmHigh 1.6°C · Low -2.6°C · 45 mm precipitation
- Szczecin in JanuaryPoland · 136 kmHigh 2.5°C · Low -1.7°C · 45 mm rain
- Gdynia in JanuaryPoland · 157 kmHigh 1.8°C · Low -2.0°C · 47 mm precipitation
- Gdańsk in JanuaryPoland · 162 kmHigh 1.6°C · Low -2.2°C · 35 mm precipitation
- Bydgoszcz in JanuaryPoland · 170 kmHigh 1.4°C · Low -3.0°C · 38 mm precipitation
- Gorzów Wielkopolski in JanuaryPoland · 174 kmHigh 2.4°C · Low -2.0°C · 47 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 Koszalin) is explained once on the Koszalin year overview and on the Sources, method and limits page.