Idar-Oberstein climate — normals and trends
Idar-Oberstein (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 779 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 (17.3 °C on average) and the coldest is January (0.1 °C). Rainfall peaks in May.
Idar-Oberstein averages 75 frost days, 3 hot days (≥ 30 °C) and 146 rainy days per year.
Idar-Oberstein has warmed by +2.0 °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 91 to 59 per year over the period.
The hottest day of the period reached 36.2 °C (on 2 July 2025) and the coldest -23.7 °C (on 1 January 1979).
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
Idar-ObersteinRhineland-Palatinate
- coords
- 49.71°, 7.31°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
12.1°C
Average daily low
5.4°C
Annual rainfall
779mm
Sunshine / day
7.6h
Mean relative humidity
80%
Average peak wind
16.9km/h
Seasonal range
17.2°C
Frost days (< 0 °C)
75 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
146 d/yr
Annual snowfall
49.2 cm
Average feels-like high
9.6 °C
Average feels-like low
2.6 °C
Average peak gust
37.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
36.2 °C
2 July 2025
Coldest day
-23.7 °C
1 January 1979
Wettest day
66 mm
30 June 2024
Windiest day
52.0 km/h
1 March 1990
Strongest gust
132.5 km/h
24 November 1984
Hottest feels-like
38.8 °C
6 July 1957
Coldest feels-like
-28.7 °C
1 January 1979
Snowiest day
24.8 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 | 4.3 °C | +2.2 °C | 118 mm | +53 mm |
| Feb | 4.7 °C | +1.0 °C | 37 mm | -21 mm |
| Mar | 12.0 °C | +4.0 °C | 20 mm | -42 mm |
| Apr | 15.5 °C | +3.3 °C | 38 mm | -21 mm |
| May | 19.2 °C | +2.7 °C | 44 mm | -31 mm |
| Jun | 24.4 °C | +4.7 °C | 49 mm | -21 mm |
| Jul | 24.0 °C | +2.3 °C | 81 mm | +15 mm |
| Aug | 25.2 °C | +3.8 °C | 32 mm | -34 mm |
| Sep | 18.0 °C | +0.3 °C | 149 mm | +88 mm |
| Oct | 12.6 °C | +0.1 °C | 83 mm | +23 mm |
| Nov | 8.3 °C | +1.8 °C | 44 mm | -23 mm |
| Dec | 5.8 °C | +2.6 °C | 26 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 Idar-Oberstein?
Idar-Oberstein has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 779 mm of precipitation per year.
What is the hottest day ever recorded in Idar-Oberstein?
The hottest day measured in Idar-Oberstein between 1940 and 2025 was 2 July 2025, reaching 36.2 °C.
What is the coldest day in Idar-Oberstein?
The coldest day measured in Idar-Oberstein between 1940 and 2025 was 1 January 1979, at -23.7 °C.
Does it snow in Idar-Oberstein?
Yes. Idar-Oberstein gets on average 49.2 cm of snow per year and has around 75 frost days.
Has the climate of Idar-Oberstein warmed?
Yes: Idar-Oberstein warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Idar-Oberstein?
The wettest day measured in Idar-Oberstein between 1940 and 2025 was 30 June 2024, with 66 mm of rain in 24 hours.
What was the windiest day in Idar-Oberstein?
The windiest day measured in Idar-Oberstein between 1940 and 2025 was 1 March 1990, with winds reaching 52.0 km/h.
What is the warmest month in Idar-Oberstein?
The warmest month in Idar-Oberstein is July (17.3 °C on average); the coldest is January (0.1 °C).
How much does it rain in Idar-Oberstein?
Idar-Oberstein receives on average 779 mm of precipitation per year, spread over about 146 rainy days.
Is it sunny in Idar-Oberstein?
Idar-Oberstein 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 Idar-Oberstein?
The heaviest 24-hour snowfall measured in Idar-Oberstein between 1940 and 2025 was 27 April 1981, with 24.8 cm.
Are there tropical nights in Idar-Oberstein?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Idar-Oberstein.
What was the most extreme apparent temperature in Idar-Oberstein?
In Idar-Oberstein, between 1940 and 2025, the highest apparent temperature reached 38.8 °C on 6 July 1957, and the lowest was -28.7 °C on 1 January 1979.
Compare Idar-Oberstein with another city
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Nearby cities
The climate around Idar-Oberstein