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Ostrava Weather by Month
Average temperatures, rainfall and humidity for Ostrava, Czechia, month by month, built from OpenWeather's historical records. Use it to see what a typical Ostrava month looks like before you travel — then check the live Ostrava forecast for the days ahead.
Warmest month
July
25°C average high
Coolest month
January
-3°C average low
Wettest month
May
78 mm of rain
Driest month
January
17 mm of rain
Average temperature and rainfall in Ostrava 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 | -23°C / 14°C | 17 mm | 85% | 16 km/h |
| February | 5°C | -1°C | -15°C / 17°C | 24 mm | 81% | 15 km/h |
| March | 10°C | 1°C | -19°C / 23°C | 32 mm | 72% | 14 km/h |
| April | 14°C | 4°C | -10°C / 28°C | 34 mm | 69% | 13 km/h |
| May | 18°C | 8°C | -1°C / 29°C | 78 mm | 72% | 11 km/h |
| June | 24°C | 13°C | 4°C / 36°C | 60 mm | 73% | 10 km/h |
| July | 25°C | 14°C | 6°C / 36°C | 59 mm | 70% | 10 km/h |
| August | 25°C | 14°C | 5°C / 39°C | 54 mm | 72% | 10 km/h |
| September | 20°C | 10°C | 0°C / 32°C | 62 mm | 79% | 11 km/h |
| October | 14°C | 6°C | -3°C / 25°C | 48 mm | 82% | 13 km/h |
| November | 8°C | 3°C | -9°C / 20°C | 29 mm | 85% | 14 km/h |
| December | 4°C | -1°C | -18°C / 14°C | 30 mm | 86% | 16 km/h |
Best time to visit Ostrava
The most comfortable time to visit Ostrava 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 529 mm a year.
Travellers who prefer heat should aim for July, when highs average 25°C. May is the month to avoid if rain would spoil your plans — it averages 78 mm, roughly 5× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Ostrava forecast for what is happening now.