Climate averages 1991–2020
Brno weather
in July.
A warm, moderately wet month: the warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Brno: daytime highs average 25.0°C and nights cool to about 15.5°C. By daytime temperature it is the warmest month of the year.
Expect about 84 mm of rain on roughly 13 days, which makes July a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 15 h 47 min on an average July day.
The nearest other city in this atlas is Olomouc (64 km away). In July its highs average 24.2°C, 0.8°C cooler than Brno, with 91 mm of rain.
Among the 12 cities listed in Czechia, Brno ranks 1st of 12 for the warmest July highs and 4th of 12 for the driest July (rainfall, lowest first). The mean July high of those 12 cities is 23.8°C; Brno is 1.2°C warmer than that mean.
From July to August, average highs fall by 0.1°C to 24.9°C, and monthly rainfall falls from 84 mm to 69 mm.
The annual picture
July in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Brno climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.9°C-3.7°C | -3.7°C | 33 | 8.8 | 8.79 h |
| February | 4.3°C-2.9°C | -2.9°C | 28 | 7.3 | 10.110 h |
| March | 8.9°C0.2°C | 0.2°C | 40 | 8.8 | 11.912 h |
| April | 14.8°C4.7°C | 4.7°C | 40 | 9.1 | 13.714 h |
| May | 19.2°C9.7°C | 9.7°C | 65 | 12.4 | 15.315 h |
| June | 22.8°C13.4°C | 13.4°C | 75 | 12.3 | 16.216 h |
| July, selected | 25.0°C15.5°C | 15.5°C | 84 | 13.0 | 15.816 h |
| August | 24.9°C15.3°C | 15.3°C | 69 | 10.4 | 14.414 h |
| September | 19.5°C11.0°C | 11.0°C | 64 | 9.5 | 12.713 h |
| October | 13.6°C6.4°C | 6.4°C | 44 | 8.9 | 10.811 h |
| November | 7.5°C2.3°C | 2.3°C | 41 | 9.0 | 9.29 h |
| December | 2.6°C-2.3°C | -2.3°C | 36 | 9.0 | 8.38 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Olomouc in JulyCzechia · 64 kmHigh 24.2°C · Low 14.6°C · 91 mm rain
- Zlín in JulyCzechia · 77 kmHigh 24.3°C · Low 15.1°C · 105 mm rain
- Vienna in JulyAustria · 111 kmHigh 25.8°C · Low 16.3°C · 79 mm rain
- Pardubice in JulyCzechia · 111 kmHigh 23.9°C · Low 14.5°C · 86 mm rain
- Bratislava in JulySlovakia · 122 kmHigh 26.3°C · Low 16.6°C · 78 mm rain
- Hradec Králové in JulyCzechia · 126 kmHigh 23.7°C · Low 14.4°C · 74 mm rain
- Ostrava in JulyCzechia · 140 kmHigh 23.7°C · Low 14.7°C · 114 mm rain
- Nitra in JulySlovakia · 146 kmHigh 26.4°C · Low 16.4°C · 72 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Brno) is explained once on the Brno year overview and on the Sources, method and limits page.