Nienburg climate — normals and trends
Nienburg (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.4 °C and it receives 718 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 (17.8 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in July.
Nienburg averages 61 frost days, 4 hot days (≥ 30 °C) and 145 rainy days per year.
Nienburg has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 78 to 44 per year over the period.
The hottest day of the period reached 37.3 °C (on 25 July 2019) and the coldest -25.1 °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
NienburgLower Saxony
- coords
- 52.64°, 9.22°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.4°C
Average daily high
12.9°C
Average daily low
6.1°C
Annual rainfall
718mm
Sunshine / day
7.2h
Mean relative humidity
78%
Average peak wind
18.0km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
61 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
145 d/yr
Annual snowfall
31.4 cm
Average feels-like high
10.3 °C
Average feels-like low
3.2 °C
Average peak gust
37.5 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
+2.1 °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
37.3 °C
25 July 2019
Coldest day
-25.1 °C
13 February 1940
Wettest day
55 mm
18 July 2002
Windiest day
61.6 km/h
13 November 1972
Strongest gust
123.8 km/h
13 November 1972
Hottest feels-like
39.6 °C
4 July 2015
Coldest feels-like
-30.4 °C
13 February 1940
Snowiest day
14.8 cm
2 January 1987
Sunniest day
16.2 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 | 4.5 °C | +1.3 °C | 81 mm | +22 mm |
| Feb | 5.2 °C | +0.9 °C | 17 mm | -32 mm |
| Mar | 12.4 °C | +4.3 °C | 10 mm | -44 mm |
| Apr | 16.7 °C | +3.8 °C | 32 mm | -20 mm |
| May | 19.8 °C | +2.4 °C | 34 mm | -27 mm |
| Jun | 23.2 °C | +2.8 °C | 80 mm | +14 mm |
| Jul | 23.7 °C | +1.5 °C | 73 mm | -3 mm |
| Aug | 24.7 °C | +2.6 °C | 33 mm | -36 mm |
| Sep | 20.5 °C | +2.0 °C | 41 mm | -14 mm |
| Oct | 13.8 °C | +0.3 °C | 85 mm | +28 mm |
| Nov | 9.0 °C | +1.3 °C | 64 mm | +6 mm |
| Dec | 6.9 °C | +2.5 °C | 36 mm | -27 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 Nienburg?
Nienburg has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.4 °C and it receives 718 mm of precipitation per year.
What is the hottest day ever recorded in Nienburg?
The hottest day measured in Nienburg between 1940 and 2025 was 25 July 2019, reaching 37.3 °C.
What is the coldest day in Nienburg?
The coldest day measured in Nienburg between 1940 and 2025 was 13 February 1940, at -25.1 °C.
Does it snow in Nienburg?
Yes. Nienburg gets on average 31.4 cm of snow per year and has around 61 frost days.
Has the climate of Nienburg warmed?
Yes: Nienburg warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nienburg?
The wettest day measured in Nienburg between 1940 and 2025 was 18 July 2002, with 55 mm of rain in 24 hours.
What was the windiest day in Nienburg?
The windiest day measured in Nienburg between 1940 and 2025 was 13 November 1972, with winds reaching 61.6 km/h.
What is the warmest month in Nienburg?
The warmest month in Nienburg is July (17.8 °C on average); the coldest is January (1.2 °C).
How much does it rain in Nienburg?
Nienburg receives on average 718 mm of precipitation per year, spread over about 145 rainy days.
Is it sunny in Nienburg?
Nienburg gets on average 7.2 hours of sunshine per day, roughly 2,628 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nienburg?
The heaviest 24-hour snowfall measured in Nienburg between 1940 and 2025 was 2 January 1987, with 14.8 cm.
Are there tropical nights in Nienburg?
Yes: Nienburg has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Nienburg?
In Nienburg, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 4 July 2015, and the lowest was -30.4 °C on 13 February 1940.
Compare Nienburg with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nienburg