Aš climate — normals and trends
Aš (Czechia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.1 °C and it receives 763 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 (16.4 °C on average) and the coldest is January (-2.5 °C). Rainfall peaks in July.
Aš averages 109 frost days, 2 hot days (≥ 30 °C) and 149 rainy days per year.
Aš has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 130 to 88 per year over the period.
The hottest day of the period reached 34.5 °C (on 13 August 2003) and the coldest -26.5 °C (on 10 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
AšCarlsbad Region
- coords
- 50.22°, 12.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.1°C
Average daily high
10.7°C
Average daily low
3.7°C
Annual rainfall
763mm
Sunshine / day
7.2h
Mean relative humidity
81%
Average peak wind
16.3km/h
Seasonal range
18.9°C
Frost days (< 0 °C)
109 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
149 d/yr
Annual snowfall
102.3 cm
Average feels-like high
7.9 °C
Average feels-like low
0.6 °C
Average peak gust
36.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °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
34.5 °C
13 August 2003
Coldest day
-26.5 °C
10 February 1956
Wettest day
54 mm
8 August 1978
Windiest day
49.0 km/h
18 January 2007
Strongest gust
133.2 km/h
18 January 2007
Hottest feels-like
38.2 °C
7 July 1957
Coldest feels-like
-31.7 °C
10 February 1956
Snowiest day
24.4 cm
24 April 1980
Sunniest day
15.8 h
20 June 2025
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 | 3.5 °C | +3.8 °C | 70 mm | +12 mm |
| Feb | 2.3 °C | +1.0 °C | 13 mm | -38 mm |
| Mar | 10.0 °C | +4.1 °C | 29 mm | -27 mm |
| Apr | 14.8 °C | +3.7 °C | 42 mm | -16 mm |
| May | 16.9 °C | +1.1 °C | 51 mm | -24 mm |
| Jun | 23.6 °C | +4.5 °C | 47 mm | -32 mm |
| Jul | 22.2 °C | +1.3 °C | 108 mm | +25 mm |
| Aug | 23.7 °C | +3.0 °C | 42 mm | -32 mm |
| Sep | 18.2 °C | +1.5 °C | 96 mm | +39 mm |
| Oct | 10.6 °C | -0.5 °C | 75 mm | +23 mm |
| Nov | 5.5 °C | +0.9 °C | 32 mm | -24 mm |
| Dec | 3.1 °C | +2.1 °C | 16 mm | -47 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 Aš?
Aš has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.1 °C and it receives 763 mm of precipitation per year.
What is the hottest day ever recorded in Aš?
The hottest day measured in Aš between 1940 and 2025 was 13 August 2003, reaching 34.5 °C.
What is the coldest day in Aš?
The coldest day measured in Aš between 1940 and 2025 was 10 February 1956, at -26.5 °C.
Does it snow in Aš?
Yes. Aš gets on average 102.3 cm of snow per year and has around 109 frost days.
Has the climate of Aš warmed?
Yes: Aš warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aš?
The wettest day measured in Aš between 1940 and 2025 was 8 August 1978, with 54 mm of rain in 24 hours.
What was the windiest day in Aš?
The windiest day measured in Aš between 1940 and 2025 was 18 January 2007, with winds reaching 49.0 km/h.
What is the warmest month in Aš?
The warmest month in Aš is July (16.4 °C on average); the coldest is January (-2.5 °C).
How much does it rain in Aš?
Aš receives on average 763 mm of precipitation per year, spread over about 149 rainy days.
Is it sunny in Aš?
Aš gets on average 7.2 hours of sunshine per day, roughly 2,628 hours per year over 1940-2025.
What is the biggest single-day snowfall in Aš?
The heaviest 24-hour snowfall measured in Aš between 1940 and 2025 was 24 April 1980, with 24.4 cm.
Are there tropical nights in Aš?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Aš.
What was the most extreme apparent temperature in Aš?
In Aš, between 1940 and 2025, the highest apparent temperature reached 38.2 °C on 7 July 1957, and the lowest was -31.7 °C on 10 February 1956.
Compare Aš with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aš