Simmerath climate — normals and trends
Simmerath (Germany) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.7 °C and it receives 1,048 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 (15.7 °C on average) and the coldest is January (-0.3 °C). Rainfall peaks in July.
Simmerath averages 83 frost days, 1 hot days (≥ 30 °C) and 178 rainy days per year.
Simmerath 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 102 to 64 per year over the period.
The hottest day of the period reached 36.0 °C (on 25 July 2019) and the coldest -22.4 °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
SimmerathNorth Rhine-Westphalia
- coords
- 50.60°, 6.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.7°C
Average daily high
10.8°C
Average daily low
4.7°C
Annual rainfall
1,048mm
Sunshine / day
7.5h
Mean relative humidity
83%
Average peak wind
20.6km/h
Seasonal range
16.0°C
Frost days (< 0 °C)
83 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
178 d/yr
Annual snowfall
101.3 cm
Average feels-like high
7.9 °C
Average feels-like low
1.3 °C
Average peak gust
41.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.7 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
36.0 °C
25 July 2019
Coldest day
-22.4 °C
1 January 1979
Wettest day
104 mm
14 July 2021
Windiest day
60.6 km/h
24 November 1984
Strongest gust
138.6 km/h
24 November 1984
Hottest feels-like
37.0 °C
25 July 2019
Coldest feels-like
-27.9 °C
27 January 1942
Snowiest day
22.1 cm
1 February 1953
Sunniest day
15.4 h
26 June 2001
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 | 2.5 °C | +0.9 °C | 163 mm | +77 mm |
| Feb | 4.3 °C | +1.5 °C | 47 mm | -31 mm |
| Mar | 10.8 °C | +4.1 °C | 13 mm | -70 mm |
| Apr | 14.3 °C | +3.6 °C | 80 mm | +0 mm |
| May | 16.9 °C | +2.0 °C | 65 mm | -32 mm |
| Jun | 21.9 °C | +4.1 °C | 82 mm | -18 mm |
| Jul | 21.5 °C | +2.0 °C | 161 mm | +58 mm |
| Aug | 21.9 °C | +2.6 °C | 46 mm | -51 mm |
| Sep | 16.8 °C | +0.7 °C | 131 mm | +54 mm |
| Oct | 11.2 °C | -0.4 °C | 107 mm | +33 mm |
| Nov | 7.7 °C | +1.7 °C | 66 mm | -18 mm |
| Dec | 5.9 °C | +3.0 °C | 39 mm | -53 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 Simmerath?
Simmerath has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.7 °C and it receives 1,048 mm of precipitation per year.
What is the hottest day ever recorded in Simmerath?
The hottest day measured in Simmerath between 1940 and 2025 was 25 July 2019, reaching 36.0 °C.
What is the coldest day in Simmerath?
The coldest day measured in Simmerath between 1940 and 2025 was 1 January 1979, at -22.4 °C.
Does it snow in Simmerath?
Yes. Simmerath gets on average 101.3 cm of snow per year and has around 83 frost days.
Has the climate of Simmerath warmed?
Yes: Simmerath warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Simmerath?
The wettest day measured in Simmerath between 1940 and 2025 was 14 July 2021, with 104 mm of rain in 24 hours.
What was the windiest day in Simmerath?
The windiest day measured in Simmerath between 1940 and 2025 was 24 November 1984, with winds reaching 60.6 km/h.
What is the warmest month in Simmerath?
The warmest month in Simmerath is July (15.7 °C on average); the coldest is January (-0.3 °C).
How much does it rain in Simmerath?
Simmerath receives on average 1,048 mm of precipitation per year, spread over about 178 rainy days.
Is it sunny in Simmerath?
Simmerath 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 Simmerath?
The heaviest 24-hour snowfall measured in Simmerath between 1940 and 2025 was 1 February 1953, with 22.1 cm.
Are there tropical nights in Simmerath?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Simmerath.
What was the most extreme apparent temperature in Simmerath?
In Simmerath, between 1940 and 2025, the highest apparent temperature reached 37.0 °C on 25 July 2019, and the lowest was -27.9 °C on 27 January 1942.
Compare Simmerath with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Simmerath