Rønne climate — normals and trends
Rønne (Denmark) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.5 °C and it receives 650 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (17.4 °C on average) and the coldest is February (1.2 °C). Rainfall peaks in November.
Rønne averages 37 frost days, 0 hot days (≥ 30 °C) and 132 rainy days per year.
Rønne has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 60 to 14 per year over the period.
The hottest day of the period reached 24.9 °C (on 13 July 2010) and the coldest -12.5 °C (on 25 January 1942).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
RønneCapital Region
- coords
- 55.10°, 14.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.5°C
Average daily high
9.4°C
Average daily low
7.7°C
Annual rainfall
650mm
Sunshine / day
8.1h
Mean relative humidity
82%
Average peak wind
35.1km/h
Seasonal range
16.2°C
Frost days (< 0 °C)
37 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
51.2 cm
Average feels-like high
5.4 °C
Average feels-like low
2.2 °C
Average peak gust
47.2 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
11.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.50 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
24.9 °C
13 July 2010
Coldest day
-12.5 °C
25 January 1942
Wettest day
62 mm
7 September 1965
Windiest day
98.0 km/h
14 January 1993
Strongest gust
153.0 km/h
4 December 1999
Hottest feels-like
28.4 °C
1 August 2018
Coldest feels-like
-22.3 °C
25 January 1942
Snowiest day
12.8 cm
1 March 1949
Sunniest day
16.1 h
23 June 2019
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.2 °C | +2.5 °C | 86 mm | +28 mm |
| Feb | 3.5 °C | +1.4 °C | 15 mm | -29 mm |
| Mar | 5.7 °C | +2.5 °C | 7 mm | -31 mm |
| Apr | 8.3 °C | +2.8 °C | 7 mm | -26 mm |
| May | 11.1 °C | +1.6 °C | 45 mm | +10 mm |
| Jun | 15.6 °C | +1.1 °C | 41 mm | -1 mm |
| Jul | 18.7 °C | +1.0 °C | 47 mm | -11 mm |
| Aug | 18.9 °C | +0.6 °C | 55 mm | -12 mm |
| Sep | 17.7 °C | +2.0 °C | 65 mm | -3 mm |
| Oct | 12.7 °C | +1.0 °C | 123 mm | +54 mm |
| Nov | 8.8 °C | +1.3 °C | 58 mm | -16 mm |
| Dec | 6.7 °C | +2.2 °C | 19 mm | -47 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Rønne?
Rønne has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.5 °C and it receives 650 mm of precipitation per year.
What is the hottest day ever recorded in Rønne?
The hottest day measured in Rønne between 1940 and 2025 was 13 July 2010, reaching 24.9 °C.
What is the coldest day in Rønne?
The coldest day measured in Rønne between 1940 and 2025 was 25 January 1942, at -12.5 °C.
Does it snow in Rønne?
Yes. Rønne gets on average 51.2 cm of snow per year and has around 37 frost days.
Has the climate of Rønne warmed?
Yes: Rønne warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rønne?
The wettest day measured in Rønne between 1940 and 2025 was 7 September 1965, with 62 mm of rain in 24 hours.
What was the windiest day in Rønne?
The windiest day measured in Rønne between 1940 and 2025 was 14 January 1993, with winds reaching 98.0 km/h.
What is the warmest month in Rønne?
The warmest month in Rønne is August (17.4 °C on average); the coldest is February (1.2 °C).
How much does it rain in Rønne?
Rønne receives on average 650 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Rønne?
Rønne gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rønne?
The heaviest 24-hour snowfall measured in Rønne between 1940 and 2025 was 1 March 1949, with 12.8 cm.
Are there tropical nights in Rønne?
Yes: Rønne has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rønne?
In Rønne, between 1940 and 2025, the highest apparent temperature reached 28.4 °C on 1 August 2018, and the lowest was -22.3 °C on 25 January 1942.
Compare Rønne with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rønne