Ottweiler climate — normals and trends
Ottweiler (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.1 °C and it receives 799 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 (17.9 °C on average) and the coldest is January (0.4 °C). Rainfall peaks in December.
Ottweiler averages 70 frost days, 4 hot days (≥ 30 °C) and 144 rainy days per year.
Ottweiler has warmed by +1.9 °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 86 to 54 per year over the period.
The hottest day of the period reached 36.9 °C (on 5 July 2015) and the coldest -21.0 °C (on 23 January 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
OttweilerSaarland
- coords
- 49.40°, 7.16°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.1°C
Average daily high
12.6°C
Average daily low
5.9°C
Annual rainfall
799mm
Sunshine / day
7.6h
Mean relative humidity
78%
Average peak wind
16.8km/h
Seasonal range
17.5°C
Frost days (< 0 °C)
70 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
46.5 cm
Average feels-like high
10.1 °C
Average feels-like low
3.0 °C
Average peak gust
37.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
36.9 °C
5 July 2015
Coldest day
-21.0 °C
23 January 1940
Wettest day
61 mm
30 June 2024
Windiest day
52.2 km/h
1 March 1990
Strongest gust
127.4 km/h
1 March 1990
Hottest feels-like
38.3 °C
6 July 1957
Coldest feels-like
-26.8 °C
2 February 1956
Snowiest day
20.2 cm
27 April 1981
Sunniest day
15.1 h
1 July 1940
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 | +2.3 °C | 122 mm | +51 mm |
| Feb | 5.1 °C | +0.9 °C | 36 mm | -27 mm |
| Mar | 12.2 °C | +3.7 °C | 20 mm | -44 mm |
| Apr | 16.0 °C | +3.3 °C | 37 mm | -23 mm |
| May | 19.6 °C | +2.6 °C | 39 mm | -34 mm |
| Jun | 24.9 °C | +4.6 °C | 57 mm | -10 mm |
| Jul | 24.3 °C | +1.9 °C | 87 mm | +25 mm |
| Aug | 25.5 °C | +3.5 °C | 39 mm | -25 mm |
| Sep | 18.3 °C | 0.0 °C | 154 mm | +93 mm |
| Oct | 13.0 °C | +0.1 °C | 91 mm | +28 mm |
| Nov | 8.5 °C | +1.7 °C | 50 mm | -22 mm |
| Dec | 6.1 °C | +2.6 °C | 25 mm | -54 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 Ottweiler?
Ottweiler has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.1 °C and it receives 799 mm of precipitation per year.
What is the hottest day ever recorded in Ottweiler?
The hottest day measured in Ottweiler between 1940 and 2025 was 5 July 2015, reaching 36.9 °C.
What is the coldest day in Ottweiler?
The coldest day measured in Ottweiler between 1940 and 2025 was 23 January 1940, at -21.0 °C.
Does it snow in Ottweiler?
Yes. Ottweiler gets on average 46.5 cm of snow per year and has around 70 frost days.
Has the climate of Ottweiler warmed?
Yes: Ottweiler warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ottweiler?
The wettest day measured in Ottweiler between 1940 and 2025 was 30 June 2024, with 61 mm of rain in 24 hours.
What was the windiest day in Ottweiler?
The windiest day measured in Ottweiler between 1940 and 2025 was 1 March 1990, with winds reaching 52.2 km/h.
What is the warmest month in Ottweiler?
The warmest month in Ottweiler is July (17.9 °C on average); the coldest is January (0.4 °C).
How much does it rain in Ottweiler?
Ottweiler receives on average 799 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Ottweiler?
Ottweiler gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ottweiler?
The heaviest 24-hour snowfall measured in Ottweiler between 1940 and 2025 was 27 April 1981, with 20.2 cm.
Are there tropical nights in Ottweiler?
Yes: Ottweiler has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ottweiler?
In Ottweiler, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 6 July 1957, and the lowest was -26.8 °C on 2 February 1956.
Compare Ottweiler with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ottweiler