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Koszalin, Poland climate
Cfb Oceanic / temperate
Koszalin has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 22°C, while the coldest is January averaging around −2°C at night. Around 755 mm of precipitation falls each year, peaking in August (92 mm) and easing off in April (34 mm). At latitude 54°N, day length swings from 7.1 hours in midwinter to 16.9 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Koszalin climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 4 | 7 | 13 | 17 | 20 | 22 | 22 | 18 | 13 | 7 | 4 |
| Avg temp (°C) | 0 | 1 | 3 | 8 | 12 | 16 | 18 | 18 | 14 | 9 | 5 | 1 |
| Avg low (°C) | −2 | −2 | 0 | 4 | 7 | 11 | 13 | 13 | 10 | 6 | 2 | −1 |
| Precipitation (mm) | 55 | 41 | 48 | 34 | 53 | 75 | 92 | 92 | 75 | 72 | 57 | 60 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 4 | 7 | 13 | 17 | 20 |
| Avg temp (°C) | 0 | 1 | 3 | 8 | 12 | 16 |
| Avg low (°C) | −2 | −2 | 0 | 4 | 7 | 11 |
| Precipitation (mm) | 55 | 41 | 48 | 34 | 53 | 75 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 18 | 13 | 7 | 4 |
| Avg temp (°C) | 18 | 18 | 14 | 9 | 5 | 1 |
| Avg low (°C) | 13 | 13 | 10 | 6 | 2 | −1 |
| Precipitation (mm) | 92 | 92 | 75 | 72 | 57 | 60 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 75 | 66 | 62 | 64 | 64 | 65 | 66 | 72 | 79 | 79 |
| Relative humidity (%) | 94 | 92 | 87 | 80 | 76 | 75 | 75 | 74 | 78 | 85 | 92 | 94 |
| Wind speed (mph) | 9.4 | 9.1 | 8.4 | 7.4 | 6.7 | 6.8 | 6.6 | 6.4 | 7.2 | 7.9 | 8.2 | 8.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 75 | 66 | 62 | 64 |
| Relative humidity (%) | 94 | 92 | 87 | 80 | 76 | 75 |
| Wind speed (mph) | 9.4 | 9.1 | 8.4 | 7.4 | 6.7 | 6.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 66 | 72 | 79 | 79 |
| Relative humidity (%) | 75 | 74 | 78 | 85 | 92 | 94 |
| Wind speed (mph) | 6.6 | 6.4 | 7.2 | 7.9 | 8.2 | 8.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Koszalin, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.