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Brno Weather by Month
Average temperatures, rainfall and humidity for Brno, Czechia, month by month, built from OpenWeather’s historical records. Use it to see what a typical Brno month looks like before you travel — then check the live Brno forecast for the days ahead.
Warmest month
July
27°C average high
Coolest month
January
-2°C average low
Wettest month
July
55 mm of rain
Driest month
January
22 mm of rain
Average temperature and rainfall in Brno 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 | -2°C | -18°C / 14°C | 22 mm | 84% | 11 km/h |
| February | 6°C | -1°C | -14°C / 16°C | 28 mm | 78% | 12 km/h |
| March | 10°C | 2°C | -14°C / 22°C | 35 mm | 67% | 13 km/h |
| April | 15°C | 5°C | -6°C / 26°C | 31 mm | 63% | 14 km/h |
| May | 19°C | 9°C | -1°C / 31°C | 55 mm | 67% | 13 km/h |
| June | 25°C | 14°C | 6°C / 39°C | 52 mm | 66% | 11 km/h |
| July | 27°C | 15°C | 7°C / 38°C | 55 mm | 63% | 10 km/h |
| August | 26°C | 15°C | 6°C / 39°C | 52 mm | 66% | 10 km/h |
| September | 21°C | 11°C | 0°C / 33°C | 53 mm | 72% | 11 km/h |
| October | 14°C | 7°C | -2°C / 25°C | 40 mm | 79% | 11 km/h |
| November | 8°C | 3°C | -8°C / 18°C | 33 mm | 85% | 11 km/h |
| December | 4°C | -1°C | -12°C / 13°C | 23 mm | 86% | 10 km/h |
Best time to visit Brno
The most comfortable time to visit Brno 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 July, totalling about 480 mm a year.
Travellers who prefer heat should aim for July, when highs average 27°C. July is the month to avoid if rain would spoil your plans — it averages 55 mm, roughly 3× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Brno forecast for what is happening now.