Olomouc climate — normals and trends
Olomouc (Czechia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.5 °C and it receives 659 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 (18.6 °C on average) and the coldest is January (-2.4 °C). Rainfall peaks in July.
Olomouc averages 101 frost days, 5 hot days (≥ 30 °C) and 123 rainy days per year.
Olomouc has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 122 to 80 per year over the period.
The hottest day of the period reached 37.1 °C (on 8 August 2013) and the coldest -28.4 °C (on 7 January 1985).
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
OlomoucOlomouc Region
- coords
- 49.60°, 17.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.5°C
Average daily high
12.4°C
Average daily low
4.7°C
Annual rainfall
659mm
Sunshine / day
7.7h
Mean relative humidity
77%
Average peak wind
16.3km/h
Seasonal range
21.0°C
Frost days (< 0 °C)
101 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
58.3 cm
Average feels-like high
9.9 °C
Average feels-like low
2.0 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.54 · 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
37.1 °C
8 August 2013
Coldest day
-28.4 °C
7 January 1985
Wettest day
73 mm
25 August 1965
Windiest day
43.2 km/h
19 October 1941
Strongest gust
100.8 km/h
19 January 2007
Hottest feels-like
38.1 °C
5 July 1957
Coldest feels-like
-33.5 °C
7 January 1985
Snowiest day
16.2 cm
20 March 2007
Sunniest day
15.9 h
21 June 2022
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 | 3.1 °C | +3.1 °C | 29 mm | -6 mm |
| Feb | 3.6 °C | +1.3 °C | 11 mm | -24 mm |
| Mar | 11.8 °C | +4.5 °C | 50 mm | +10 mm |
| Apr | 16.1 °C | +2.9 °C | 27 mm | -22 mm |
| May | 16.9 °C | -1.1 °C | 40 mm | -34 mm |
| Jun | 24.7 °C | +3.3 °C | 61 mm | -22 mm |
| Jul | 24.1 °C | +0.6 °C | 130 mm | +44 mm |
| Aug | 24.9 °C | +1.5 °C | 44 mm | -27 mm |
| Sep | 19.5 °C | +0.6 °C | 136 mm | +79 mm |
| Oct | 12.3 °C | -0.6 °C | 36 mm | -6 mm |
| Nov | 6.2 °C | -0.1 °C | 70 mm | +23 mm |
| Dec | 3.1 °C | +1.4 °C | 19 mm | -21 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 Olomouc?
Olomouc has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.5 °C and it receives 659 mm of precipitation per year.
What is the hottest day ever recorded in Olomouc?
The hottest day measured in Olomouc between 1940 and 2025 was 8 August 2013, reaching 37.1 °C.
What is the coldest day in Olomouc?
The coldest day measured in Olomouc between 1940 and 2025 was 7 January 1985, at -28.4 °C.
Does it snow in Olomouc?
Yes. Olomouc gets on average 58.3 cm of snow per year and has around 101 frost days.
Has the climate of Olomouc warmed?
Yes: Olomouc warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Olomouc?
The wettest day measured in Olomouc between 1940 and 2025 was 25 August 1965, with 73 mm of rain in 24 hours.
What was the windiest day in Olomouc?
The windiest day measured in Olomouc between 1940 and 2025 was 19 October 1941, with winds reaching 43.2 km/h.
What is the warmest month in Olomouc?
The warmest month in Olomouc is July (18.6 °C on average); the coldest is January (-2.4 °C).
How much does it rain in Olomouc?
Olomouc receives on average 659 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Olomouc?
Olomouc 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 Olomouc?
The heaviest 24-hour snowfall measured in Olomouc between 1940 and 2025 was 20 March 2007, with 16.2 cm.
Are there tropical nights in Olomouc?
Yes: Olomouc has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Olomouc?
In Olomouc, between 1940 and 2025, the highest apparent temperature reached 38.1 °C on 5 July 1957, and the lowest was -33.5 °C on 7 January 1985.
Compare Olomouc with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Olomouc