Idstein climate — normals and trends
Idstein (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.1 °C and it receives 751 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 (0.3 °C). Rainfall peaks in June.
Idstein averages 73 frost days, 4 hot days (≥ 30 °C) and 143 rainy days per year.
Idstein 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 89 to 57 per year over the period.
The hottest day of the period reached 38.2 °C (on 25 July 2019) and the coldest -24.4 °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
IdsteinHesse
- coords
- 50.22°, 8.27°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.1°C
Average daily high
12.6°C
Average daily low
5.6°C
Annual rainfall
751mm
Sunshine / day
7.5h
Mean relative humidity
78%
Average peak wind
15.3km/h
Seasonal range
17.6°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
39.8 cm
Average feels-like high
10.3 °C
Average feels-like low
3.0 °C
Average peak gust
35.7 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.43 · 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
38.2 °C
25 July 2019
Coldest day
-24.4 °C
16 February 1956
Wettest day
48 mm
4 November 1940
Windiest day
47.6 km/h
1 March 1990
Strongest gust
125.6 km/h
18 January 2007
Hottest feels-like
39.3 °C
6 July 1957
Coldest feels-like
-28.9 °C
16 February 1956
Snowiest day
15.0 cm
17 November 1972
Sunniest day
15.2 h
28 June 2019
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 | 106 mm | +51 mm |
| Feb | 4.8 °C | +0.8 °C | 33 mm | -16 mm |
| Mar | 12.4 °C | +3.9 °C | 12 mm | -45 mm |
| Apr | 16.4 °C | +3.5 °C | 39 mm | -18 mm |
| May | 20.1 °C | +2.8 °C | 50 mm | -23 mm |
| Jun | 25.1 °C | +4.6 °C | 50 mm | -24 mm |
| Jul | 24.9 °C | +2.4 °C | 90 mm | +18 mm |
| Aug | 26.0 °C | +3.8 °C | 43 mm | -29 mm |
| Sep | 19.0 °C | +0.6 °C | 118 mm | +57 mm |
| Oct | 13.0 °C | +0.1 °C | 74 mm | +17 mm |
| Nov | 7.8 °C | +1.1 °C | 44 mm | -18 mm |
| Dec | 5.4 °C | +1.9 °C | 29 mm | -34 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 Idstein?
Idstein has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.1 °C and it receives 751 mm of precipitation per year.
What is the hottest day ever recorded in Idstein?
The hottest day measured in Idstein between 1940 and 2025 was 25 July 2019, reaching 38.2 °C.
What is the coldest day in Idstein?
The coldest day measured in Idstein between 1940 and 2025 was 16 February 1956, at -24.4 °C.
Does it snow in Idstein?
Yes. Idstein gets on average 39.8 cm of snow per year and has around 73 frost days.
Has the climate of Idstein warmed?
Yes: Idstein warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Idstein?
The wettest day measured in Idstein between 1940 and 2025 was 4 November 1940, with 48 mm of rain in 24 hours.
What was the windiest day in Idstein?
The windiest day measured in Idstein between 1940 and 2025 was 1 March 1990, with winds reaching 47.6 km/h.
What is the warmest month in Idstein?
The warmest month in Idstein is July (17.9 °C on average); the coldest is January (0.3 °C).
How much does it rain in Idstein?
Idstein receives on average 751 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Idstein?
Idstein gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Idstein?
The heaviest 24-hour snowfall measured in Idstein between 1940 and 2025 was 17 November 1972, with 15.0 cm.
Are there tropical nights in Idstein?
Yes: Idstein has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Idstein?
In Idstein, between 1940 and 2025, the highest apparent temperature reached 39.3 °C on 6 July 1957, and the lowest was -28.9 °C on 16 February 1956.
Compare Idstein with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Idstein