Rønne climate by month
What the weather is like
Rønne has an oceanic climate (Köppen Cfb): rain spread through the year and no real dry season.
The warmest month is August, when afternoons average 21° and nights 15°. February is the coolest month, with highs of 3° and lows of 0°. The difference between the warmest and the coolest month is about 16°.
About 572 mm of precipitation falls in an average year. December is the wettest month (51 mm, 16 wet days) and April the driest (26 mm, 7 wet days). Cloud cover ranges from 30% in July to 57% in January.
The sea reaches about 18° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Copenhagen, the capital, Rønne is 1.3° cooler on a August afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 21° · August
- Coldest nights
- 0° · February
- Wettest month
- December
- Driest month
- April
- Clearest skies
- July · 30% cloud
- Warmest sea
- 18° · August
- Longest day
- 17 h 21 min
- Shortest day
- 7 h 12 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 4° | 3° | 5° | 8° | 13° | 17° | 20° | 21° | 17° | 13° | 8° | 5° |
| Average low | 0° | 0° | 1° | 4° | 7° | 11° | 14° | 15° | 12° | 8° | 5° | 2° |
| Precipitation | 47 mm | 35 mm | 38 mm | 26 mm | 36 mm | 46 mm | 52 mm | 56 mm | 64 mm | 62 mm | 59 mm | 51 mm |
| Wet days (≥1 mm) | 13.7 | 11.5 | 9.2 | 7 | 7.5 | 8.9 | 11.7 | 13.5 | 10.6 | 14 | 15 | 15.7 |
| Cloud cover | 57% | 54% | 45% | 36% | 31% | 32% | 30% | 32% | 36% | 42% | 52% | 57% |
| Sea temperature | 4° | 3° | 3° | 5° | 9° | 13° | 17° | 18° | 16° | 12° | 9° | 6° |
| Daylight | 7h 45 | 9h 41 | 11h 46 | 14h 06 | 16h 08 | 17h 21 | 16h 51 | 15h 02 | 12h 47 | 10h 34 | 8h 26 | 7h 12 |
| Month score | 14 | 21 | 30 | 39 | 54 | 73 | 72 | 67 | 68 | 33 | 16 | 14 |