Fehmarn climate — normals and trends
Fehmarn (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 682 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 (17.5 °C on average) and the coldest is February (1.4 °C). Rainfall peaks in August.
Fehmarn averages 37 frost days, 0 hot days (≥ 30 °C) and 138 rainy days per year.
Fehmarn has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 57 to 17 per year over the period.
The hottest day of the period reached 27.7 °C (on 31 July 2018) and the coldest -11.8 °C (on 21 January 1940).
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
FehmarnSchleswig-Holstein
- coords
- 54.44°, 11.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
10.1°C
Average daily low
7.8°C
Annual rainfall
682mm
Sunshine / day
7.9h
Mean relative humidity
82%
Average peak wind
32.8km/h
Seasonal range
16.1°C
Frost days (< 0 °C)
37 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
38.8 cm
Average feels-like high
6.4 °C
Average feels-like low
2.7 °C
Average peak gust
44.2 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
11.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
27.7 °C
31 July 2018
Coldest day
-11.8 °C
21 January 1940
Wettest day
52 mm
28 August 1989
Windiest day
86.4 km/h
14 January 1993
Strongest gust
138.2 km/h
3 December 1999
Hottest feels-like
29.4 °C
1 August 1994
Coldest feels-like
-21.0 °C
11 January 1987
Snowiest day
19.0 cm
10 April 1970
Sunniest day
16.5 h
24 June 2009
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 | 4.6 °C | +2.0 °C | 65 mm | +10 mm |
| Feb | 3.5 °C | +1.0 °C | 15 mm | -29 mm |
| Mar | 6.6 °C | +2.5 °C | 10 mm | -33 mm |
| Apr | 10.5 °C | +3.4 °C | 19 mm | -19 mm |
| May | 13.7 °C | +1.7 °C | 57 mm | +12 mm |
| Jun | 17.6 °C | +1.2 °C | 66 mm | +11 mm |
| Jul | 19.8 °C | +1.1 °C | 119 mm | +52 mm |
| Aug | 19.4 °C | +0.6 °C | 40 mm | -36 mm |
| Sep | 17.7 °C | +1.6 °C | 64 mm | -4 mm |
| Oct | 12.9 °C | +1.6 °C | 116 mm | +50 mm |
| Nov | 8.6 °C | +1.6 °C | 68 mm | +3 mm |
| Dec | 6.5 °C | +2.3 °C | 25 mm | -36 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 Fehmarn?
Fehmarn has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 682 mm of precipitation per year.
What is the hottest day ever recorded in Fehmarn?
The hottest day measured in Fehmarn between 1940 and 2025 was 31 July 2018, reaching 27.7 °C.
What is the coldest day in Fehmarn?
The coldest day measured in Fehmarn between 1940 and 2025 was 21 January 1940, at -11.8 °C.
Does it snow in Fehmarn?
Yes. Fehmarn gets on average 38.8 cm of snow per year and has around 37 frost days.
Has the climate of Fehmarn warmed?
Yes: Fehmarn warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Fehmarn?
The wettest day measured in Fehmarn between 1940 and 2025 was 28 August 1989, with 52 mm of rain in 24 hours.
What was the windiest day in Fehmarn?
The windiest day measured in Fehmarn between 1940 and 2025 was 14 January 1993, with winds reaching 86.4 km/h.
What is the warmest month in Fehmarn?
The warmest month in Fehmarn is August (17.5 °C on average); the coldest is February (1.4 °C).
How much does it rain in Fehmarn?
Fehmarn receives on average 682 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Fehmarn?
Fehmarn gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Fehmarn?
The heaviest 24-hour snowfall measured in Fehmarn between 1940 and 2025 was 10 April 1970, with 19.0 cm.
Are there tropical nights in Fehmarn?
Yes: Fehmarn has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Fehmarn?
In Fehmarn, between 1940 and 2025, the highest apparent temperature reached 29.4 °C on 1 August 1994, and the lowest was -21.0 °C on 11 January 1987.
Compare Fehmarn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Fehmarn