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Gdańsk, Poland climate
Cfb Oceanic / temperate
Gdańsk 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 −1°C at night. Around 606 mm of precipitation falls each year, peaking in July (89 mm) and easing off in February (30 mm). At latitude 55°N, day length swings from 7.0 hours in midwinter to 17.0 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)Gdańsk climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 3 | 6 | 11 | 16 | 20 | 22 | 22 | 18 | 12 | 7 | 4 |
| Avg temp (°C) | 0 | 1 | 3 | 7 | 12 | 16 | 18 | 18 | 15 | 10 | 5 | 2 |
| Avg low (°C) | −1 | −1 | 0 | 3 | 7 | 11 | 15 | 15 | 12 | 7 | 4 | 0 |
| Precipitation (mm) | 38 | 30 | 32 | 32 | 48 | 54 | 89 | 68 | 61 | 57 | 50 | 46 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 3 | 6 | 11 | 16 | 20 |
| Avg temp (°C) | 0 | 1 | 3 | 7 | 12 | 16 |
| Avg low (°C) | −1 | −1 | 0 | 3 | 7 | 11 |
| Precipitation (mm) | 38 | 30 | 32 | 32 | 48 | 54 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 18 | 12 | 7 | 4 |
| Avg temp (°C) | 18 | 18 | 15 | 10 | 5 | 2 |
| Avg low (°C) | 15 | 15 | 12 | 7 | 4 | 0 |
| Precipitation (mm) | 89 | 68 | 61 | 57 | 50 | 46 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 82 | 81 | 75 | 66 | 61 | 63 | 64 | 63 | 66 | 74 | 82 | 81 |
| Relative humidity (%) | 91 | 89 | 85 | 82 | 80 | 79 | 79 | 77 | 79 | 84 | 90 | 91 |
| Wind speed (m/s) | 5.7 | 5.4 | 4.8 | 3.8 | 3.5 | 3.7 | 3.7 | 3.8 | 4.4 | 5.0 | 5.2 | 5.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 82 | 81 | 75 | 66 | 61 | 63 |
| Relative humidity (%) | 91 | 89 | 85 | 82 | 80 | 79 |
| Wind speed (m/s) | 5.7 | 5.4 | 4.8 | 3.8 | 3.5 | 3.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 63 | 66 | 74 | 82 | 81 |
| Relative humidity (%) | 79 | 77 | 79 | 84 | 90 | 91 |
| Wind speed (m/s) | 3.7 | 3.8 | 4.4 | 5.0 | 5.2 | 5.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Hel, a weather station, about 30 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.