Ahlem climate — normals and trends
Ahlem (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 702 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 (18.1 °C on average) and the coldest is January (1.0 °C). Rainfall peaks in July.
Ahlem averages 62 frost days, 5 hot days (≥ 30 °C) and 141 rainy days per year.
Ahlem has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 79 to 45 per year over the period.
The hottest day of the period reached 38.9 °C (on 20 July 2022) and the coldest -26.1 °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
AhlemLower Saxony
- coords
- 52.38°, 9.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
13.0°C
Average daily low
6.1°C
Annual rainfall
702mm
Sunshine / day
7.3h
Mean relative humidity
78%
Average peak wind
17.7km/h
Seasonal range
17.1°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
33.7 cm
Average feels-like high
10.4 °C
Average feels-like low
3.2 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °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
38.9 °C
20 July 2022
Coldest day
-26.1 °C
27 January 1942
Wettest day
64 mm
18 July 2002
Windiest day
62.6 km/h
13 November 1972
Strongest gust
127.4 km/h
13 November 1972
Hottest feels-like
39.6 °C
4 July 2015
Coldest feels-like
-31.8 °C
27 January 1942
Snowiest day
16.3 cm
2 January 1987
Sunniest day
16.1 h
23 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 | 4.7 °C | +1.7 °C | 81 mm | +25 mm |
| Feb | 5.2 °C | +1.0 °C | 17 mm | -31 mm |
| Mar | 12.5 °C | +4.3 °C | 9 mm | -45 mm |
| Apr | 16.8 °C | +3.8 °C | 27 mm | -25 mm |
| May | 19.8 °C | +2.2 °C | 42 mm | -19 mm |
| Jun | 23.5 °C | +2.8 °C | 62 mm | -4 mm |
| Jul | 24.0 °C | +1.6 °C | 62 mm | -11 mm |
| Aug | 25.2 °C | +2.9 °C | 36 mm | -32 mm |
| Sep | 20.6 °C | +1.9 °C | 40 mm | -15 mm |
| Oct | 13.7 °C | +0.2 °C | 69 mm | +16 mm |
| Nov | 9.0 °C | +1.4 °C | 60 mm | +4 mm |
| Dec | 6.8 °C | +2.5 °C | 29 mm | -32 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 Ahlem?
Ahlem has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 702 mm of precipitation per year.
What is the hottest day ever recorded in Ahlem?
The hottest day measured in Ahlem between 1940 and 2025 was 20 July 2022, reaching 38.9 °C.
What is the coldest day in Ahlem?
The coldest day measured in Ahlem between 1940 and 2025 was 27 January 1942, at -26.1 °C.
Does it snow in Ahlem?
Yes. Ahlem gets on average 33.7 cm of snow per year and has around 62 frost days.
Has the climate of Ahlem warmed?
Yes: Ahlem warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ahlem?
The wettest day measured in Ahlem between 1940 and 2025 was 18 July 2002, with 64 mm of rain in 24 hours.
What was the windiest day in Ahlem?
The windiest day measured in Ahlem between 1940 and 2025 was 13 November 1972, with winds reaching 62.6 km/h.
What is the warmest month in Ahlem?
The warmest month in Ahlem is July (18.1 °C on average); the coldest is January (1.0 °C).
How much does it rain in Ahlem?
Ahlem receives on average 702 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in Ahlem?
Ahlem gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ahlem?
The heaviest 24-hour snowfall measured in Ahlem between 1940 and 2025 was 2 January 1987, with 16.3 cm.
Are there tropical nights in Ahlem?
Yes: Ahlem has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ahlem?
In Ahlem, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 4 July 2015, and the lowest was -31.8 °C on 27 January 1942.
Compare Ahlem with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ahlem