Brno climate
Brno is warmest in July, with average highs of 25 °C, and coldest in January, when nights average -3.8 °C. July is the wettest month (83 mm) and February the driest (28 mm). Figures are 1991–2020 climate normals.
Across a full year Brno averages 618 mm of rain, 44 days above 25 °C and 98 days below freezing.
Czechia · population 379,466 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month July 25 °C
- Coldest month January -3.8 °C
- Driest month February 28 mm
- Wettest month July 83 mm
- Least cloud August 51 % cloud
- Hottest on record August 36 °C
- Coldest on record December -27 °C
What to expectBrno through the year
Brno has a clear annual cycle: average daily highs run from 1.9 °C in January to 25 °C in July, a swing of 21 °C in mean temperature across the year.
Counted across a normal year, 44 days a year reach 25 °C, 8 of them reach 30 °C, 98 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in August.
Rain is strongly seasonal. July averages 83 mm against 28 mm in February — 3.0 times as much. Planning around the dry months matters more here than planning around temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 1.9 °C | 34 mm | 76 % |
| February | 4.3 °C | 28 mm | 71 % |
| March | 8.9 °C | 39 mm | 65 % |
| April | 14.8 °C | 40 mm | 57 % |
| May | 19.2 °C | 66 mm | 59 % |
| June | 22.8 °C | 75 mm | 58 % |
| July | 25.0 °C | 83 mm | 54 % |
| August | 24.9 °C | 68 mm | 51 % |
| September | 19.4 °C | 64 mm | 58 % |
| October | 13.6 °C | 43 mm | 68 % |
| November | 7.5 °C | 41 mm | 79 % |
| December | 2.6 °C | 36 mm | 79 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 1.9 °C | -3.8 °C | -1.0 °C | 14.0 °C | -20.9 °C | 0 | 0 | 25 |
| February | 4.3 °C | -3.0 °C | 0.5 °C | 16.1 °C | -19.0 °C | 0 | 0 | 21 |
| March | 8.9 °C | -0.0 °C | 4.4 °C | 19.9 °C | -15.0 °C | 0 | 0 | 15 |
| April | 14.8 °C | 4.5 °C | 9.9 °C | 28.2 °C | -8.7 °C | 0 | 0 | 3 |
| May | 19.2 °C | 9.5 °C | 14.7 °C | 31.1 °C | -1.0 °C | 3 | 0 | 0 |
| June | 22.8 °C | 13.2 °C | 18.4 °C | 34.5 °C | 4.8 °C | 9 | 1 | 0 |
| July | 25.0 °C | 15.2 °C | 20.4 °C | 35.6 °C | 7.6 °C | 15 | 3 | 0 |
| August | 24.9 °C | 15.1 °C | 20.2 °C | 35.9 °C | 6.6 °C | 15 | 4 | 0 |
| September | 19.4 °C | 10.8 °C | 15.1 °C | 31.1 °C | 1.0 °C | 2 | 0 | 0 |
| October | 13.6 °C | 6.2 °C | 9.8 °C | 25.1 °C | -4.2 °C | 0 | 0 | 2 |
| November | 7.5 °C | 2.1 °C | 4.8 °C | 17.8 °C | -15.8 °C | 0 | 0 | 10 |
| December | 2.6 °C | -2.4 °C | 0.1 °C | 12.1 °C | -26.7 °C | 0 | 0 | 22 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 34 mm | 9 | 8.7 h/day | 76 % | 83 % | 17 km/h |
| February | 28 mm | 7 | 10 h/day | 71 % | 79 % | 18 km/h |
| March | 39 mm | 9 | 12 h/day | 65 % | 74 % | 19 km/h |
| April | 40 mm | 9 | 14 h/day | 57 % | 68 % | 18 km/h |
| May | 66 mm | 12 | 15 h/day | 59 % | 69 % | 18 km/h |
| June | 75 mm | 12 | 16 h/day | 58 % | 69 % | 16 km/h |
| July | 83 mm | 12 | 16 h/day | 54 % | 67 % | 16 km/h |
| August | 68 mm | 10 | 14 h/day | 51 % | 67 % | 15 km/h |
| September | 64 mm | 9 | 13 h/day | 58 % | 73 % | 16 km/h |
| October | 43 mm | 8 | 11 h/day | 68 % | 80 % | 17 km/h |
| November | 41 mm | 9 | 9.1 h/day | 79 % | 85 % | 17 km/h |
| December | 36 mm | 9 | 8.2 h/day | 79 % | 85 % | 17 km/h |
Planning a trip? See the best time to visit Brno.
QuestionsCommon questions about Brno’s climate
When is the best time to visit Brno?
That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August sit closest to 20 °C on average, July is the warmest month and February the driest. The month-by-month table above has the full picture.
How hot does Brno get?
In July, the warmest month, daily highs average 25 °C. About 8 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.
How cold does it get in winter?
Nights average -3.8 °C in January, the coldest month. A normal year has 98 nights below freezing.
Which month is wettest in Brno?
July, averaging 83 mm over 12 days with rain. The driest month is February with 28 mm. The year as a whole averages 618 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Brno rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Data point
- 49.195°, 16.608° (the coordinates the reanalysis values are taken for)
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.