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Karlskrona, Sweden climate
Cfb Oceanic / temperate
Karlskrona has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 73°F, while the coldest is January averaging around 26°F at night. Around 24 inches of precipitation falls each year, peaking in August (2.9 inches) and easing off in April (1.1 inches). At latitude 56°N, day length swings from 6.6 hours in midwinter to 17.4 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)Karlskrona climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 37 | 43 | 53 | 62 | 68 | 73 | 71 | 63 | 53 | 44 | 38 |
| Avg temp (°F) | 31 | 32 | 36 | 43 | 51 | 58 | 63 | 62 | 55 | 46 | 39 | 34 |
| Avg low (°F) | 26 | 26 | 28 | 33 | 40 | 48 | 53 | 52 | 46 | 39 | 34 | 29 |
| Precipitation (in) | 1.8 | 1.6 | 1.4 | 1.1 | 1.7 | 2.3 | 2.6 | 2.9 | 2.2 | 2.3 | 2.5 | 2.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 37 | 43 | 53 | 62 | 68 |
| Avg temp (°F) | 31 | 32 | 36 | 43 | 51 | 58 |
| Avg low (°F) | 26 | 26 | 28 | 33 | 40 | 48 |
| Precipitation (in) | 1.8 | 1.6 | 1.4 | 1.1 | 1.7 | 2.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 73 | 71 | 63 | 53 | 44 | 38 |
| Avg temp (°F) | 63 | 62 | 55 | 46 | 39 | 34 |
| Avg low (°F) | 53 | 52 | 46 | 39 | 34 | 29 |
| Precipitation (in) | 2.6 | 2.9 | 2.2 | 2.3 | 2.5 | 2.0 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 74 | 70 | 65 | 65 | 66 | 65 | 66 | 70 | 74 | 76 | 75 |
| Relative humidity (%) | 96 | 94 | 89 | 81 | 78 | 78 | 80 | 83 | 87 | 91 | 96 | 97 |
| Wind speed (mph) | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.1 | 2.0 | 2.1 | 2.3 | 2.2 | 1.9 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 74 | 70 | 65 | 65 | 66 |
| Relative humidity (%) | 96 | 94 | 89 | 81 | 78 | 78 |
| Wind speed (mph) | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 66 | 70 | 74 | 76 | 75 |
| Relative humidity (%) | 80 | 83 | 87 | 91 | 96 | 97 |
| Wind speed (mph) | 2.0 | 2.1 | 2.3 | 2.2 | 1.9 | 1.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Ronneby, a weather station, about 23 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.