Assen climate — normals and trends
Assen (The Netherlands) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.3 °C and it receives 779 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 (16.9 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in July.
Assen averages 56 frost days, 2 hot days (≥ 30 °C) and 150 rainy days per year.
Assen 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 70 to 42 per year over the period.
The hottest day of the period reached 36.3 °C (on 25 July 2019) and the coldest -24.9 °C (on 27 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
AssenDrenthe
- coords
- 53.00°, 6.56°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.3°C
Average daily high
12.6°C
Average daily low
6.1°C
Annual rainfall
779mm
Sunshine / day
7.5h
Mean relative humidity
82%
Average peak wind
20.8km/h
Seasonal range
15.0°C
Frost days (< 0 °C)
56 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
150 d/yr
Annual snowfall
21.9 cm
Average feels-like high
10.0 °C
Average feels-like low
3.1 °C
Average peak gust
39.5 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 = 0.42 · 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
36.3 °C
25 July 2019
Coldest day
-24.9 °C
27 January 1942
Wettest day
49 mm
15 September 1994
Windiest day
64.9 km/h
13 November 1972
Strongest gust
129.2 km/h
18 January 2007
Hottest feels-like
40.2 °C
25 July 2019
Coldest feels-like
-30.5 °C
27 January 1942
Snowiest day
15.5 cm
25 February 1958
Sunniest day
16.2 h
24 June 2020
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 | 5.4 °C | +1.5 °C | 59 mm | -2 mm |
| Feb | 5.8 °C | +1.0 °C | 28 mm | -21 mm |
| Mar | 12.2 °C | +3.9 °C | 10 mm | -45 mm |
| Apr | 15.5 °C | +3.2 °C | 54 mm | -0 mm |
| May | 17.9 °C | +1.4 °C | 39 mm | -27 mm |
| Jun | 21.6 °C | +2.4 °C | 98 mm | +25 mm |
| Jul | 22.5 °C | +1.7 °C | 105 mm | +17 mm |
| Aug | 22.8 °C | +2.0 °C | 47 mm | -34 mm |
| Sep | 19.0 °C | +1.0 °C | 82 mm | +17 mm |
| Oct | 14.1 °C | +0.6 °C | 107 mm | +46 mm |
| Nov | 9.5 °C | +1.2 °C | 79 mm | +16 mm |
| Dec | 7.8 °C | +2.6 °C | 24 mm | -39 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 Assen?
Assen has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.3 °C and it receives 779 mm of precipitation per year.
What is the hottest day ever recorded in Assen?
The hottest day measured in Assen between 1940 and 2025 was 25 July 2019, reaching 36.3 °C.
What is the coldest day in Assen?
The coldest day measured in Assen between 1940 and 2025 was 27 January 1942, at -24.9 °C.
Does it snow in Assen?
Yes. Assen gets on average 21.9 cm of snow per year and has around 56 frost days.
Has the climate of Assen warmed?
Yes: Assen warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Assen?
The wettest day measured in Assen between 1940 and 2025 was 15 September 1994, with 49 mm of rain in 24 hours.
What was the windiest day in Assen?
The windiest day measured in Assen between 1940 and 2025 was 13 November 1972, with winds reaching 64.9 km/h.
What is the warmest month in Assen?
The warmest month in Assen is July (16.9 °C on average); the coldest is January (1.9 °C).
How much does it rain in Assen?
Assen receives on average 779 mm of precipitation per year, spread over about 150 rainy days.
Is it sunny in Assen?
Assen gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Assen?
The heaviest 24-hour snowfall measured in Assen between 1940 and 2025 was 25 February 1958, with 15.5 cm.
Are there tropical nights in Assen?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Assen.
What was the most extreme apparent temperature in Assen?
In Assen, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 25 July 2019, and the lowest was -30.5 °C on 27 January 1942.
Compare Assen with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Assen