Monthly climate guide
Brno weather in August
Expect hot weather in Brno in August: afternoons reach about 28°C (82°F), while nights drop to around 15°C (59°F). Around 61 mm of rain falls over the month (some rain), and skies are often cloudy. Daytime highs are about the same as July and 6°C warmer than September.
What stands out in August
- It cools down fast from here: September is about 6°C cooler.
- Just 140 km apart, but Brno runs about 2°C warmer than Ostrava this month.
- Evenings cool off sharply: the daily range is around 13°C, so pack a layer.
- Skies are at their clearest this time of year.
August is typically Brno's warmest month.
Avg high
28°C
82°F
Avg low
15°C
59°F
Rainfall
61 mm
some rain
Humidity
61%
relative
Sky
58%
cloud · often cloudy
Brno weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 2°C / 35°F | -4°C / 24°F | 34 mm | 91% | 84% |
| February | 4°C / 40°F | -4°C / 26°F | 30 mm | 87% | 77% |
| March | 10°C / 50°F | 0°C / 31°F | 28 mm | 79% | 67% |
| April | 16°C / 61°F | 4°C / 40°F | 30 mm | 72% | 62% |
| May | 20°C / 68°F | 9°C / 48°F | 67 mm | 70% | 66% |
| June | 25°C / 78°F | 14°C / 56°F | 70 mm | 65% | 67% |
| July | 28°C / 82°F | 15°C / 60°F | 67 mm | 61% | 65% |
| August | 28°C / 82°F | 15°C / 59°F | 61 mm | 61% | 58% |
| September | 22°C / 72°F | 11°C / 51°F | 65 mm | 69% | 62% |
| October | 15°C / 60°F | 5°C / 42°F | 51 mm | 81% | 70% |
| November | 8°C / 47°F | 2°C / 35°F | 32 mm | 89% | 78% |
| December | 3°C / 38°F | -2°C / 28°F | 33 mm | 92% | 83% |
What to pack for August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is August a good time to visit Brno?
Compare the months in the chart above to find your ideal window.
Best time to visit Brno →Other Czech Republic cities in August
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Brno weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/czech-republic/brno/august
<a href="https://weathercompare.eu/weather/czech-republic/brno/august">Brno weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/czech-republic/brno" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Brno weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/czech-republic/brno/august">Brno weather in August</a> – WeatherCompare</p>
Brno in August: quick answers
Is August a good time to visit Brno?
Yes. August is one of the best months for Brno, with highs around 28°C and about 61 mm of rain.
How warm is Brno in August?
Average highs are about 28°C (82°F) and average lows about 15°C (59°F), based on 10 years of daily data.
Does it rain a lot in Brno in August?
Brno typically gets around 61 mm of rain in August — some rain.
Figures are long-term averages for the area around Brno (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.