Haderslev climate — normals and trends
Haderslev (Denmark) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.4 °C and it receives 718 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 July (16.5 °C on average) and the coldest is January (0.9 °C). Rainfall peaks in August.
Haderslev averages 62 frost days, 0 hot days (≥ 30 °C) and 138 rainy days per year.
Haderslev has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 83 to 41 per year over the period.
The hottest day of the period reached 31.7 °C (on 20 July 2022) and the coldest -21.7 °C (on 26 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
HaderslevSouth Denmark
- coords
- 55.25°, 9.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.4°C
Average daily high
11.0°C
Average daily low
5.9°C
Annual rainfall
718mm
Sunshine / day
7.7h
Mean relative humidity
82%
Average peak wind
22.6km/h
Seasonal range
15.6°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
40.8 cm
Average feels-like high
7.9 °C
Average feels-like low
2.5 °C
Average peak gust
40.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
31.7 °C
20 July 2022
Coldest day
-21.7 °C
26 January 1942
Wettest day
60 mm
25 July 2015
Windiest day
73.0 km/h
8 January 2005
Strongest gust
132.8 km/h
3 December 1999
Hottest feels-like
32.6 °C
20 July 2022
Coldest feels-like
-27.0 °C
26 January 1942
Snowiest day
15.3 cm
21 November 1971
Sunniest day
17.0 h
21 June 1940
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 | 4.5 °C | +2.0 °C | 80 mm | +19 mm |
| Feb | 3.8 °C | +1.0 °C | 17 mm | -31 mm |
| Mar | 9.4 °C | +3.9 °C | 10 mm | -39 mm |
| Apr | 13.2 °C | +3.5 °C | 34 mm | -12 mm |
| May | 15.9 °C | +1.4 °C | 34 mm | -19 mm |
| Jun | 18.8 °C | +0.9 °C | 65 mm | +4 mm |
| Jul | 21.4 °C | +1.7 °C | 118 mm | +49 mm |
| Aug | 20.6 °C | +0.9 °C | 52 mm | -20 mm |
| Sep | 18.1 °C | +1.6 °C | 61 mm | -3 mm |
| Oct | 12.9 °C | +0.9 °C | 111 mm | +44 mm |
| Nov | 8.0 °C | +0.9 °C | 55 mm | -9 mm |
| Dec | 6.7 °C | +2.6 °C | 35 mm | -28 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 Haderslev?
Haderslev has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.4 °C and it receives 718 mm of precipitation per year.
What is the hottest day ever recorded in Haderslev?
The hottest day measured in Haderslev between 1940 and 2025 was 20 July 2022, reaching 31.7 °C.
What is the coldest day in Haderslev?
The coldest day measured in Haderslev between 1940 and 2025 was 26 January 1942, at -21.7 °C.
Does it snow in Haderslev?
Yes. Haderslev gets on average 40.8 cm of snow per year and has around 62 frost days.
Has the climate of Haderslev warmed?
Yes: Haderslev warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Haderslev?
The wettest day measured in Haderslev between 1940 and 2025 was 25 July 2015, with 60 mm of rain in 24 hours.
What was the windiest day in Haderslev?
The windiest day measured in Haderslev between 1940 and 2025 was 8 January 2005, with winds reaching 73.0 km/h.
What is the warmest month in Haderslev?
The warmest month in Haderslev is July (16.5 °C on average); the coldest is January (0.9 °C).
How much does it rain in Haderslev?
Haderslev receives on average 718 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Haderslev?
Haderslev gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Haderslev?
The heaviest 24-hour snowfall measured in Haderslev between 1940 and 2025 was 21 November 1971, with 15.3 cm.
Are there tropical nights in Haderslev?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Haderslev.
What was the most extreme apparent temperature in Haderslev?
In Haderslev, between 1940 and 2025, the highest apparent temperature reached 32.6 °C on 20 July 2022, and the lowest was -27.0 °C on 26 January 1942.
Compare Haderslev with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Haderslev