Home › Cities › Finland › Kotka
Kotka, Finland climate
Dfb Warm-summer humid continental
Kotka has a seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 70°F, while the coldest is February averaging around 18°F at night. Precipitation is fairly even year-round, totalling about 16 inches. At latitude 60°N, day length swings from 5.4 hours in midwinter to 18.6 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)Kotka climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 29 | 27 | 33 | 43 | 54 | 63 | 70 | 68 | 59 | 48 | 39 | 34 |
| Avg temp (°F) | 25 | 23 | 28 | 37 | 48 | 57 | 64 | 63 | 55 | 44 | 36 | 30 |
| Avg low (°F) | 21 | 18 | 23 | 32 | 42 | 52 | 59 | 58 | 50 | 40 | 33 | 27 |
| Precipitation (in) | 1.1 | 1.1 | 0.9 | 1.1 | 1.0 | 1.5 | 1.3 | 1.4 | 1.5 | 1.7 | 1.7 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 29 | 27 | 33 | 43 | 54 | 63 |
| Avg temp (°F) | 25 | 23 | 28 | 37 | 48 | 57 |
| Avg low (°F) | 21 | 18 | 23 | 32 | 42 | 52 |
| Precipitation (in) | 1.1 | 1.1 | 0.9 | 1.1 | 1.0 | 1.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 70 | 68 | 59 | 48 | 39 | 34 |
| Avg temp (°F) | 64 | 63 | 55 | 44 | 36 | 30 |
| Avg low (°F) | 59 | 58 | 50 | 40 | 33 | 27 |
| Precipitation (in) | 1.3 | 1.4 | 1.5 | 1.7 | 1.7 | 1.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 73 | 67 | 67 | 61 | 64 | 61 | 63 | 67 | 78 | 80 | 80 |
| Relative humidity (%) | 96 | 97 | 93 | 85 | 79 | 79 | 80 | 81 | 84 | 89 | 93 | 95 |
| Wind speed (mph) | 5.2 | 4.6 | 4.1 | 3.3 | 3.0 | 3.0 | 3.2 | 3.9 | 4.6 | 5.1 | 5.5 | 5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 73 | 67 | 67 | 61 | 64 |
| Relative humidity (%) | 96 | 97 | 93 | 85 | 79 | 79 |
| Wind speed (mph) | 5.2 | 4.6 | 4.1 | 3.3 | 3.0 | 3.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 63 | 67 | 78 | 80 | 80 |
| Relative humidity (%) | 80 | 81 | 84 | 89 | 93 | 95 |
| Wind speed (mph) | 3.2 | 3.9 | 4.6 | 5.1 | 5.5 | 5.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Kotka Rankki, a weather station, about 9 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.