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Rønne, Denmark climate
BSk Cold semi-arid
Rønne has a seasonal cool-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is August with an average daily high near 71°F, while the coldest is February averaging around 30°F at night. Precipitation totals about 8 inches a year and is strongly seasonal — July alone averages 1.3 inches while February barely receives 0.22 inches. At latitude 55°N, day length swings from 6.9 hours in midwinter to 17.1 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)Rønne climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 39 | 38 | 42 | 51 | 60 | 65 | 71 | 71 | 64 | 55 | 47 | 46 |
| Avg temp (°F) | 35 | 34 | 37 | 44 | 52 | 58 | 64 | 64 | 58 | 49 | 43 | 44 |
| Avg low (°F) | 31 | 30 | 32 | 37 | 44 | 51 | 56 | 57 | 52 | 44 | 39 | 42 |
| Precipitation (in) | 0.7 | 0.2 | 0.7 | 0.3 | 0.6 | 0.9 | 1.3 | 1.3 | 0.8 | 0.4 | 0.2 | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 39 | 38 | 42 | 51 | 60 | 65 |
| Avg temp (°F) | 35 | 34 | 37 | 44 | 52 | 58 |
| Avg low (°F) | 31 | 30 | 32 | 37 | 44 | 51 |
| Precipitation (in) | 0.7 | 0.2 | 0.7 | 0.3 | 0.6 | 0.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 71 | 71 | 64 | 55 | 47 | 46 |
| Avg temp (°F) | 64 | 64 | 58 | 49 | 43 | 44 |
| Avg low (°F) | 56 | 57 | 52 | 44 | 39 | 42 |
| Precipitation (in) | 1.3 | 1.3 | 0.8 | 0.4 | 0.2 | 0.3 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 3 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | — | — | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (days) | 9 | 9 | 8 | 3 | 0.3 | — | — | — | — | 0.9 | 3 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 2 | 2 | 2 | 2 | 2 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | — |
| Days with low ≤ 32°F (days) | 9 | 9 | 8 | 3 | 0.3 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 3 | 3 | 2 | 3 |
| Days with high ≥ 90°F (days) | — | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (days) | — | — | — | 0.9 | 3 | 6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 72 | 62 | 57 | 58 | 58 | 61 | 65 | 71 | 81 | 82 |
| Relative humidity (%) | 87 | 87 | 87 | 87 | 86 | 84 | 83 | 82 | 82 | 84 | 86 | 87 |
| Wind speed (mph) | 16.3 | 15.4 | 13.4 | 11.1 | 10.1 | 10.6 | 10.7 | 11.4 | 13.3 | 14.7 | 15.3 | 16.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 72 | 62 | 57 | 58 |
| Relative humidity (%) | 87 | 87 | 87 | 87 | 86 | 84 |
| Wind speed (mph) | 16.3 | 15.4 | 13.4 | 11.1 | 10.1 | 10.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 61 | 65 | 71 | 81 | 82 |
| Relative humidity (%) | 83 | 82 | 82 | 84 | 86 | 87 |
| Wind speed (mph) | 10.7 | 11.4 | 13.3 | 14.7 | 15.3 | 16.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 20 years of daily observations at Bornholm Ronne, a weather station, about 5 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.