Nassau climate — normals and trends
Nassau (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.9 °C and it receives 709 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 (17.5 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in May.
Nassau averages 73 frost days, 3 hot days (≥ 30 °C) and 142 rainy days per year.
Nassau has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 90 to 56 per year over the period.
The hottest day of the period reached 37.4 °C (on 25 July 2019) and the coldest -23.9 °C (on 16 February 1956).
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
NassauRhineland-Palatinate
- coords
- 50.31°, 7.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.9°C
Average daily high
12.4°C
Average daily low
5.5°C
Annual rainfall
709mm
Sunshine / day
7.4h
Mean relative humidity
79%
Average peak wind
16.1km/h
Seasonal range
17.2°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
142 d/yr
Annual snowfall
42.3 cm
Average feels-like high
9.9 °C
Average feels-like low
2.8 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °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
37.4 °C
25 July 2019
Coldest day
-23.9 °C
16 February 1956
Wettest day
56 mm
2 June 1961
Windiest day
48.0 km/h
24 November 1984
Strongest gust
126.4 km/h
18 January 2007
Hottest feels-like
39.3 °C
14 August 2025
Coldest feels-like
-28.9 °C
2 February 1956
Snowiest day
15.9 cm
17 November 1972
Sunniest day
15.1 h
19 June 2017
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 | 4.6 °C | +2.3 °C | 108 mm | +54 mm |
| Feb | 4.9 °C | +1.0 °C | 36 mm | -13 mm |
| Mar | 12.2 °C | +4.0 °C | 13 mm | -42 mm |
| Apr | 15.9 °C | +3.4 °C | 37 mm | -17 mm |
| May | 19.7 °C | +2.9 °C | 44 mm | -25 mm |
| Jun | 24.8 °C | +4.8 °C | 35 mm | -32 mm |
| Jul | 24.4 °C | +2.4 °C | 80 mm | +16 mm |
| Aug | 25.6 °C | +3.9 °C | 33 mm | -31 mm |
| Sep | 18.7 °C | +0.7 °C | 114 mm | +56 mm |
| Oct | 12.7 °C | 0.0 °C | 72 mm | +18 mm |
| Nov | 8.3 °C | +1.6 °C | 40 mm | -21 mm |
| Dec | 5.9 °C | +2.4 °C | 27 mm | -35 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 Nassau?
Nassau has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.9 °C and it receives 709 mm of precipitation per year.
What is the hottest day ever recorded in Nassau?
The hottest day measured in Nassau between 1940 and 2025 was 25 July 2019, reaching 37.4 °C.
What is the coldest day in Nassau?
The coldest day measured in Nassau between 1940 and 2025 was 16 February 1956, at -23.9 °C.
Does it snow in Nassau?
Yes. Nassau gets on average 42.3 cm of snow per year and has around 73 frost days.
Has the climate of Nassau warmed?
Yes: Nassau warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nassau?
The wettest day measured in Nassau between 1940 and 2025 was 2 June 1961, with 56 mm of rain in 24 hours.
What was the windiest day in Nassau?
The windiest day measured in Nassau between 1940 and 2025 was 24 November 1984, with winds reaching 48.0 km/h.
What is the warmest month in Nassau?
The warmest month in Nassau is July (17.5 °C on average); the coldest is January (0.3 °C).
How much does it rain in Nassau?
Nassau receives on average 709 mm of precipitation per year, spread over about 142 rainy days.
Is it sunny in Nassau?
Nassau gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nassau?
The heaviest 24-hour snowfall measured in Nassau between 1940 and 2025 was 17 November 1972, with 15.9 cm.
Are there tropical nights in Nassau?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Nassau.
What was the most extreme apparent temperature in Nassau?
In Nassau, between 1940 and 2025, the highest apparent temperature reached 39.3 °C on 14 August 2025, and the lowest was -28.9 °C on 2 February 1956.
Compare Nassau with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nassau