Hellerau climate — normals and trends
Hellerau (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 820 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 (17.5 °C on average) and the coldest is January (-1.4 °C). Rainfall peaks in July.
Hellerau averages 91 frost days, 3 hot days (≥ 30 °C) and 152 rainy days per year.
Hellerau has warmed by +2.5 °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 111 to 71 per year over the period.
The hottest day of the period reached 35.9 °C (on 19 June 2022) and the coldest -27.0 °C (on 9 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
HellerauSaxony
- coords
- 51.12°, 13.75°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.2°C
Average daily high
11.8°C
Average daily low
4.8°C
Annual rainfall
820mm
Sunshine / day
7.5h
Mean relative humidity
79%
Average peak wind
17.0km/h
Seasonal range
18.9°C
Frost days (< 0 °C)
91 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
152 d/yr
Annual snowfall
85.7 cm
Average feels-like high
9.2 °C
Average feels-like low
1.7 °C
Average peak gust
36.4 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
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.50 · 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
35.9 °C
19 June 2022
Coldest day
-27.0 °C
9 February 1956
Wettest day
103 mm
8 August 1978
Windiest day
49.7 km/h
18 January 2007
Strongest gust
131.0 km/h
18 January 2007
Hottest feels-like
40.3 °C
20 August 1943
Coldest feels-like
-32.8 °C
1 February 1954
Snowiest day
27.4 cm
29 November 2012
Sunniest day
16.0 h
24 June 2005
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 | 4.6 °C | +3.7 °C | 74 mm | +16 mm |
| Feb | 3.6 °C | +1.2 °C | 19 mm | -35 mm |
| Mar | 10.8 °C | +4.0 °C | 41 mm | -18 mm |
| Apr | 15.4 °C | +3.3 °C | 46 mm | -15 mm |
| May | 17.1 °C | +0.3 °C | 51 mm | -29 mm |
| Jun | 24.3 °C | +4.2 °C | 41 mm | -45 mm |
| Jul | 23.3 °C | +1.4 °C | 108 mm | +15 mm |
| Aug | 24.3 °C | +2.5 °C | 34 mm | -54 mm |
| Sep | 19.9 °C | +2.1 °C | 97 mm | +32 mm |
| Oct | 11.7 °C | -0.7 °C | 69 mm | +13 mm |
| Nov | 7.2 °C | +1.1 °C | 38 mm | -21 mm |
| Dec | 4.5 °C | +2.1 °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 Hellerau?
Hellerau has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.2 °C and it receives 820 mm of precipitation per year.
What is the hottest day ever recorded in Hellerau?
The hottest day measured in Hellerau between 1940 and 2025 was 19 June 2022, reaching 35.9 °C.
What is the coldest day in Hellerau?
The coldest day measured in Hellerau between 1940 and 2025 was 9 February 1956, at -27.0 °C.
Does it snow in Hellerau?
Yes. Hellerau gets on average 85.7 cm of snow per year and has around 91 frost days.
Has the climate of Hellerau warmed?
Yes: Hellerau warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hellerau?
The wettest day measured in Hellerau between 1940 and 2025 was 8 August 1978, with 103 mm of rain in 24 hours.
What was the windiest day in Hellerau?
The windiest day measured in Hellerau between 1940 and 2025 was 18 January 2007, with winds reaching 49.7 km/h.
What is the warmest month in Hellerau?
The warmest month in Hellerau is July (17.5 °C on average); the coldest is January (-1.4 °C).
How much does it rain in Hellerau?
Hellerau receives on average 820 mm of precipitation per year, spread over about 152 rainy days.
Is it sunny in Hellerau?
Hellerau 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 Hellerau?
The heaviest 24-hour snowfall measured in Hellerau between 1940 and 2025 was 29 November 2012, with 27.4 cm.
Are there tropical nights in Hellerau?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Hellerau.
What was the most extreme apparent temperature in Hellerau?
In Hellerau, between 1940 and 2025, the highest apparent temperature reached 40.3 °C on 20 August 1943, and the lowest was -32.8 °C on 1 February 1954.
Compare Hellerau with another city
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Nearby cities
The climate around Hellerau