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Olomouc Weather by Month
Average temperatures, rainfall and humidity for Olomouc, Czechia, month by month, built from OpenWeather’s historical records. Use it to see what a typical Olomouc month looks like before you travel — then check the live Olomouc forecast for the days ahead.
Warmest month
July
26°C average high
Coolest month
January
-3°C average low
Wettest month
May
80 mm of rain
Driest month
January
21 mm of rain
Average temperature and rainfall in Olomouc by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 2°C | -3°C | -21°C / 13°C | 21 mm | 88% | 13 km/h |
| February | 5°C | -1°C | -16°C / 17°C | 35 mm | 84% | 13 km/h |
| March | 10°C | 1°C | -16°C / 22°C | 45 mm | 74% | 13 km/h |
| April | 14°C | 4°C | -7°C / 28°C | 48 mm | 70% | 12 km/h |
| May | 19°C | 8°C | -1°C / 30°C | 80 mm | 75% | 10 km/h |
| June | 24°C | 13°C | 4°C / 38°C | 69 mm | 76% | 9 km/h |
| July | 26°C | 14°C | 4°C / 37°C | 66 mm | 72% | 9 km/h |
| August | 26°C | 14°C | 4°C / 38°C | 68 mm | 72% | 9 km/h |
| September | 20°C | 10°C | -1°C / 34°C | 68 mm | 79% | 10 km/h |
| October | 14°C | 6°C | -4°C / 25°C | 54 mm | 84% | 11 km/h |
| November | 8°C | 2°C | -12°C / 19°C | 36 mm | 89% | 11 km/h |
| December | 4°C | -1°C | -17°C / 13°C | 26 mm | 90% | 12 km/h |
Best time to visit Olomouc
The most comfortable time to visit Olomouc is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 616 mm a year.
Travellers who prefer heat should aim for July, when highs average 26°C. May is the month to avoid if rain would spoil your plans — it averages 80 mm, roughly 4× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Olomouc forecast for what is happening now.