Wilhelmshaven climate — normals and trends
Wilhelmshaven (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.2 °C and it receives 760 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 (17.0 °C on average) and the coldest is January (1.5 °C). Rainfall peaks in July.
Wilhelmshaven averages 57 frost days, 2 hot days (≥ 30 °C) and 152 rainy days per year.
Wilhelmshaven has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 73 to 41 per year over the period.
The hottest day of the period reached 35.7 °C (on 25 July 2019) and the coldest -23.4 °C (on 13 February 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
WilhelmshavenLower Saxony
- coords
- 53.55°, 8.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.2°C
Average daily high
12.3°C
Average daily low
6.1°C
Annual rainfall
760mm
Sunshine / day
7.7h
Mean relative humidity
82%
Average peak wind
21.7km/h
Seasonal range
15.5°C
Frost days (< 0 °C)
57 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
152 d/yr
Annual snowfall
26.5 cm
Average feels-like high
9.5 °C
Average feels-like low
2.9 °C
Average peak gust
40.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.5 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
35.7 °C
25 July 2019
Coldest day
-23.4 °C
13 February 1940
Wettest day
57 mm
29 June 1981
Windiest day
63.2 km/h
28 October 2013
Strongest gust
128.9 km/h
23 February 1967
Hottest feels-like
37.4 °C
4 July 2015
Coldest feels-like
-27.9 °C
13 February 1940
Snowiest day
16.6 cm
8 February 1966
Sunniest day
16.6 h
22 June 2022
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 | 5.1 °C | +1.7 °C | 69 mm | +11 mm |
| Feb | 5.1 °C | +0.9 °C | 23 mm | -25 mm |
| Mar | 11.5 °C | +3.9 °C | 14 mm | -41 mm |
| Apr | 14.8 °C | +2.9 °C | 31 mm | -22 mm |
| May | 17.8 °C | +1.6 °C | 40 mm | -22 mm |
| Jun | 21.5 °C | +2.4 °C | 110 mm | +36 mm |
| Jul | 22.3 °C | +1.5 °C | 105 mm | +19 mm |
| Aug | 22.9 °C | +2.0 °C | 50 mm | -30 mm |
| Sep | 19.5 °C | +1.7 °C | 69 mm | +5 mm |
| Oct | 13.8 °C | +0.6 °C | 97 mm | +36 mm |
| Nov | 9.2 °C | +1.3 °C | 80 mm | +19 mm |
| Dec | 7.3 °C | +2.5 °C | 31 mm | -29 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 Wilhelmshaven?
Wilhelmshaven has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.2 °C and it receives 760 mm of precipitation per year.
What is the hottest day ever recorded in Wilhelmshaven?
The hottest day measured in Wilhelmshaven between 1940 and 2025 was 25 July 2019, reaching 35.7 °C.
What is the coldest day in Wilhelmshaven?
The coldest day measured in Wilhelmshaven between 1940 and 2025 was 13 February 1940, at -23.4 °C.
Does it snow in Wilhelmshaven?
Yes. Wilhelmshaven gets on average 26.5 cm of snow per year and has around 57 frost days.
Has the climate of Wilhelmshaven warmed?
Yes: Wilhelmshaven warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wilhelmshaven?
The wettest day measured in Wilhelmshaven between 1940 and 2025 was 29 June 1981, with 57 mm of rain in 24 hours.
What was the windiest day in Wilhelmshaven?
The windiest day measured in Wilhelmshaven between 1940 and 2025 was 28 October 2013, with winds reaching 63.2 km/h.
What is the warmest month in Wilhelmshaven?
The warmest month in Wilhelmshaven is July (17.0 °C on average); the coldest is January (1.5 °C).
How much does it rain in Wilhelmshaven?
Wilhelmshaven receives on average 760 mm of precipitation per year, spread over about 152 rainy days.
Is it sunny in Wilhelmshaven?
Wilhelmshaven 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 Wilhelmshaven?
The heaviest 24-hour snowfall measured in Wilhelmshaven between 1940 and 2025 was 8 February 1966, with 16.6 cm.
Are there tropical nights in Wilhelmshaven?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Wilhelmshaven.
What was the most extreme apparent temperature in Wilhelmshaven?
In Wilhelmshaven, between 1940 and 2025, the highest apparent temperature reached 37.4 °C on 4 July 2015, and the lowest was -27.9 °C on 13 February 1940.
Compare Wilhelmshaven with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wilhelmshaven