Brno weather in August
August in Brno: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Brno · #251 of 897 destinations to visit in August · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Brno in August
No notes yet. Open Brno on the map to add the first one.
Brno climate normals — August
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 61°F | |
| Rainfall | 100 mm / 4 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 15°C / 59°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 14.3 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Brno?
Loading map…
Brno in August — FAQ
- Is August a good time to visit Brno?
- August in Brno: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Brno on SeasonMap's comfort score (87/100).
- What is the weather like in Brno in August?
- In August, Brno averages a daily high of 24.9°C and a low of 15.9°C, with about 100.4 mm of rain over roughly 13.4 rainy days.
- What is the air quality in Brno in August?
- Brno has a mean US Air Quality Index of about 48 in August.