Sinn climate — normals and trends
Sinn (Germany) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.2 °C and it receives 873 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 (16.8 °C on average) and the coldest is January (-0.5 °C). Rainfall peaks in December.
Sinn averages 82 frost days, 2 hot days (≥ 30 °C) and 154 rainy days per year.
Sinn 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 98 to 66 per year over the period.
The hottest day of the period reached 36.1 °C (on 25 July 2019) and the coldest -27.5 °C (on 13 February 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
SinnHesse
- coords
- 50.65°, 8.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.2°C
Average daily high
11.6°C
Average daily low
4.9°C
Annual rainfall
873mm
Sunshine / day
7.3h
Mean relative humidity
81%
Average peak wind
16.7km/h
Seasonal range
17.3°C
Frost days (< 0 °C)
82 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
154 d/yr
Annual snowfall
67.5 cm
Average feels-like high
9.0 °C
Average feels-like low
2.0 °C
Average peak gust
37.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.42 · 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
36.1 °C
25 July 2019
Coldest day
-27.5 °C
13 February 1940
Wettest day
67 mm
22 October 1986
Windiest day
52.2 km/h
18 January 2007
Strongest gust
131.4 km/h
18 January 2007
Hottest feels-like
37.6 °C
13 August 2025
Coldest feels-like
-32.6 °C
13 February 1940
Snowiest day
18.1 cm
29 March 1952
Sunniest day
15.3 h
30 June 2018
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 | 3.7 °C | +2.1 °C | 149 mm | +74 mm |
| Feb | 4.3 °C | +1.3 °C | 38 mm | -26 mm |
| Mar | 11.8 °C | +4.5 °C | 14 mm | -55 mm |
| Apr | 15.8 °C | +4.0 °C | 64 mm | +0 mm |
| May | 18.8 °C | +2.6 °C | 59 mm | -18 mm |
| Jun | 23.4 °C | +4.1 °C | 64 mm | -14 mm |
| Jul | 23.4 °C | +2.4 °C | 87 mm | +9 mm |
| Aug | 24.5 °C | +3.7 °C | 39 mm | -40 mm |
| Sep | 18.3 °C | +1.1 °C | 106 mm | +38 mm |
| Oct | 12.0 °C | +0.1 °C | 100 mm | +35 mm |
| Nov | 7.4 °C | +1.4 °C | 45 mm | -29 mm |
| Dec | 5.2 °C | +2.4 °C | 30 mm | -52 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 Sinn?
Sinn has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.2 °C and it receives 873 mm of precipitation per year.
What is the hottest day ever recorded in Sinn?
The hottest day measured in Sinn between 1940 and 2025 was 25 July 2019, reaching 36.1 °C.
What is the coldest day in Sinn?
The coldest day measured in Sinn between 1940 and 2025 was 13 February 1940, at -27.5 °C.
Does it snow in Sinn?
Yes. Sinn gets on average 67.5 cm of snow per year and has around 82 frost days.
Has the climate of Sinn warmed?
Yes: Sinn warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sinn?
The wettest day measured in Sinn between 1940 and 2025 was 22 October 1986, with 67 mm of rain in 24 hours.
What was the windiest day in Sinn?
The windiest day measured in Sinn between 1940 and 2025 was 18 January 2007, with winds reaching 52.2 km/h.
What is the warmest month in Sinn?
The warmest month in Sinn is July (16.8 °C on average); the coldest is January (-0.5 °C).
How much does it rain in Sinn?
Sinn receives on average 873 mm of precipitation per year, spread over about 154 rainy days.
Is it sunny in Sinn?
Sinn gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sinn?
The heaviest 24-hour snowfall measured in Sinn between 1940 and 2025 was 29 March 1952, with 18.1 cm.
Are there tropical nights in Sinn?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sinn.
What was the most extreme apparent temperature in Sinn?
In Sinn, between 1940 and 2025, the highest apparent temperature reached 37.6 °C on 13 August 2025, and the lowest was -32.6 °C on 13 February 1940.
Compare Sinn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sinn