Monthly climate guide
Brno weather in May
May in Brno is typically mild, with average daytime highs around 20°C (68°F) and night-time lows near 9°C (48°F). The month usually brings about 67 mm of rain (some rain) and is often cloudy. Daytime highs are 4°C warmer than April and 5°C cooler than June.
What stands out in May
- Temperatures are climbing — June is around 5°C warmer.
- Seasonally, May counts as late spring in Brno.
- Brno is usually about 2°C warmer than Ostrava, 140 km away, in May.
- It's wetter than a typical month in Brno — roughly 42% more rain than average.
Avg high
20°C
68°F
Avg low
9°C
48°F
Rainfall
67 mm
some rain
Humidity
70%
relative
Sky
66%
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 May
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is May 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 May
Cite or embed this data
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Brno weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/czech-republic/brno/may
<a href="https://weathercompare.eu/weather/czech-republic/brno/may">Brno weather in May</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 May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/czech-republic/brno/may">Brno weather in May</a> – WeatherCompare</p>
Brno in May: quick answers
Is May a good time to visit Brno?
Yes. May is one of the best months for Brno, with highs around 20°C and about 67 mm of rain.
How warm is Brno in May?
Average highs are about 20°C (68°F) and average lows about 9°C (48°F), based on 10 years of daily data.
Does it rain a lot in Brno in May?
Brno typically gets around 67 mm of rain in May — 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.