Hamelin climate — normals and trends
Hamelin (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 843 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 (17.2 °C on average) and the coldest is January (0.4 °C). Rainfall peaks in July.
Hamelin averages 68 frost days, 3 hot days (≥ 30 °C) and 159 rainy days per year.
Hamelin 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 86 to 50 per year over the period.
The hottest day of the period reached 36.8 °C (on 2 July 2025) and the coldest -29.2 °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
HamelinLower Saxony
- coords
- 52.10°, 9.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
12.2°C
Average daily low
5.6°C
Annual rainfall
843mm
Sunshine / day
7.3h
Mean relative humidity
80%
Average peak wind
17.2km/h
Seasonal range
16.8°C
Frost days (< 0 °C)
68 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
159 d/yr
Annual snowfall
54.5 cm
Average feels-like high
9.6 °C
Average feels-like low
2.6 °C
Average peak gust
38.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.43 · 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
36.8 °C
2 July 2025
Coldest day
-29.2 °C
27 January 1942
Wettest day
61 mm
12 August 1964
Windiest day
57.0 km/h
13 November 1972
Strongest gust
128.5 km/h
18 January 2007
Hottest feels-like
38.4 °C
14 August 2025
Coldest feels-like
-34.5 °C
27 January 1942
Snowiest day
19.0 cm
7 February 2021
Sunniest day
15.8 h
20 June 2025
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 | 4.3 °C | +1.9 °C | 105 mm | +37 mm |
| Feb | 4.8 °C | +1.2 °C | 25 mm | -35 mm |
| Mar | 12.0 °C | +4.4 °C | 10 mm | -55 mm |
| Apr | 16.0 °C | +3.8 °C | 40 mm | -23 mm |
| May | 18.8 °C | +2.2 °C | 46 mm | -27 mm |
| Jun | 23.1 °C | +3.4 °C | 78 mm | -1 mm |
| Jul | 23.1 °C | +1.6 °C | 86 mm | +3 mm |
| Aug | 24.2 °C | +2.8 °C | 42 mm | -38 mm |
| Sep | 19.7 °C | +1.9 °C | 52 mm | -13 mm |
| Oct | 12.6 °C | -0.2 °C | 84 mm | +22 mm |
| Nov | 8.6 °C | +1.6 °C | 56 mm | -13 mm |
| Dec | 6.3 °C | +2.6 °C | 29 mm | -46 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 Hamelin?
Hamelin has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 843 mm of precipitation per year.
What is the hottest day ever recorded in Hamelin?
The hottest day measured in Hamelin between 1940 and 2025 was 2 July 2025, reaching 36.8 °C.
What is the coldest day in Hamelin?
The coldest day measured in Hamelin between 1940 and 2025 was 27 January 1942, at -29.2 °C.
Does it snow in Hamelin?
Yes. Hamelin gets on average 54.5 cm of snow per year and has around 68 frost days.
Has the climate of Hamelin warmed?
Yes: Hamelin warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hamelin?
The wettest day measured in Hamelin between 1940 and 2025 was 12 August 1964, with 61 mm of rain in 24 hours.
What was the windiest day in Hamelin?
The windiest day measured in Hamelin between 1940 and 2025 was 13 November 1972, with winds reaching 57.0 km/h.
What is the warmest month in Hamelin?
The warmest month in Hamelin is July (17.2 °C on average); the coldest is January (0.4 °C).
How much does it rain in Hamelin?
Hamelin receives on average 843 mm of precipitation per year, spread over about 159 rainy days.
Is it sunny in Hamelin?
Hamelin 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 Hamelin?
The heaviest 24-hour snowfall measured in Hamelin between 1940 and 2025 was 7 February 2021, with 19.0 cm.
Are there tropical nights in Hamelin?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Hamelin.
What was the most extreme apparent temperature in Hamelin?
In Hamelin, between 1940 and 2025, the highest apparent temperature reached 38.4 °C on 14 August 2025, and the lowest was -34.5 °C on 27 January 1942.
Compare Hamelin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hamelin