Riesa climate — normals and trends
Riesa (Germany) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.4 °C and it receives 671 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 (18.7 °C on average) and the coldest is January (-0.1 °C). Rainfall peaks in July.
Riesa averages 73 frost days, 6 hot days (≥ 30 °C) and 136 rainy days per year.
Riesa has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 91 to 55 per year over the period.
The hottest day of the period reached 37.8 °C (on 16 July 2007) and the coldest -26.2 °C (on 18 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
RiesaSaxony
- coords
- 51.31°, 13.29°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.4°C
Average daily high
13.0°C
Average daily low
5.9°C
Annual rainfall
671mm
Sunshine / day
7.7h
Mean relative humidity
76%
Average peak wind
16.7km/h
Seasonal range
18.8°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
49.8 cm
Average feels-like high
10.6 °C
Average feels-like low
2.9 °C
Average peak gust
34.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.46 · 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
37.8 °C
16 July 2007
Coldest day
-26.2 °C
18 January 1940
Wettest day
91 mm
8 August 1978
Windiest day
53.9 km/h
18 January 2007
Strongest gust
133.2 km/h
18 January 2007
Hottest feels-like
41.4 °C
20 August 1943
Coldest feels-like
-31.1 °C
18 January 1940
Snowiest day
14.4 cm
18 March 1985
Sunniest day
16.0 h
28 June 1995
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 | 6.4 °C | +4.2 °C | 66 mm | +15 mm |
| Feb | 5.0 °C | +1.3 °C | 13 mm | -32 mm |
| Mar | 11.8 °C | +3.8 °C | 30 mm | -21 mm |
| Apr | 16.7 °C | +3.5 °C | 26 mm | -23 mm |
| May | 19.0 °C | +1.0 °C | 49 mm | -13 mm |
| Jun | 25.9 °C | +4.5 °C | 45 mm | -21 mm |
| Jul | 24.8 °C | +1.5 °C | 89 mm | +16 mm |
| Aug | 25.9 °C | +2.8 °C | 36 mm | -31 mm |
| Sep | 21.3 °C | +2.3 °C | 76 mm | +25 mm |
| Oct | 13.2 °C | -0.4 °C | 65 mm | +17 mm |
| Nov | 8.9 °C | +1.7 °C | 31 mm | -22 mm |
| Dec | 5.8 °C | +2.2 °C | 23 mm | -33 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 Riesa?
Riesa has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 9.4 °C and it receives 671 mm of precipitation per year.
What is the hottest day ever recorded in Riesa?
The hottest day measured in Riesa between 1940 and 2025 was 16 July 2007, reaching 37.8 °C.
What is the coldest day in Riesa?
The coldest day measured in Riesa between 1940 and 2025 was 18 January 1940, at -26.2 °C.
Does it snow in Riesa?
Yes. Riesa gets on average 49.8 cm of snow per year and has around 73 frost days.
Has the climate of Riesa warmed?
Yes: Riesa warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Riesa?
The wettest day measured in Riesa between 1940 and 2025 was 8 August 1978, with 91 mm of rain in 24 hours.
What was the windiest day in Riesa?
The windiest day measured in Riesa between 1940 and 2025 was 18 January 2007, with winds reaching 53.9 km/h.
What is the warmest month in Riesa?
The warmest month in Riesa is July (18.7 °C on average); the coldest is January (-0.1 °C).
How much does it rain in Riesa?
Riesa receives on average 671 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Riesa?
Riesa gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Riesa?
The heaviest 24-hour snowfall measured in Riesa between 1940 and 2025 was 18 March 1985, with 14.4 cm.
Are there tropical nights in Riesa?
Yes: Riesa has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Riesa?
In Riesa, between 1940 and 2025, the highest apparent temperature reached 41.4 °C on 20 August 1943, and the lowest was -31.1 °C on 18 January 1940.
Compare Riesa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Riesa