Brno features a temperate continental climate with four distinct seasons, marked by warm summers, cold winters, and moderate rainfall year-round. The city experiences significant temperature swings, abundant sunshine in summer, and frequent clouds in winter. This seasonal variety makes Brno an appealing destination for travellers seeking both cultural events and outdoor activities.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Brno’s climate is characterised by pronounced seasonal changes. Winters (December–February) are cold and often cloudy, with average daytime highs of 2–4°C and nighttime lows around –3°C. Snowfall is common but usually not heavy, and cold snaps can push temperatures below –10°C. Days are short, with 1–3 hours of sunshine, and humidity is high, making the cold feel sharper. Rainfall and snowfall are moderate, with December and January each receiving about 30–40 mm of precipitation over 7–12 days.
Spring (March–May) brings a gradual warming, with daytime highs rising from 8°C in March to 20°C in May. Rainfall increases, especially in May and June, and sunny hours expand to 6–7 per day. Summers (June–August) are warm and pleasant, with average highs of 22–27°C and mild nights (11–15°C). July and August are the sunniest months, with up to 8 hours of sunshine and long days (up to 16 hours of daylight). Rainfall peaks in June and July, often as brief thunderstorms, but most days remain suitable for outdoor activities. Autumn (September–November) sees cooling temperatures, from 20°C in September to 7°C in November, with decreasing rainfall and sunshine. Winds are generally light to moderate year-round, with spring being the breeziest season. Annual precipitation averages 650–700 mm, and Brno enjoys about 1,850–2,000 hours of sunshine annually.
| Average climate data for Brno, Czech Republic | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 0 | 3 | 9 | 16 | 19 | 23 | 26 | 26 | 20 | 14 | 8 | 2 | 26 |
| Average minimum temperature (°C) | -4 | -2 | 2 | 5 | 8 | 12 | 14 | 15 | 11 | 6 | 3 | -2 | -4 |
| Average precipitation (mm) | 19 | 13 | 14 | 13 | 41 | 34 | 26 | 24 | 18 | 14 | 17 | 18 | 250 |
| Average rainfall days (days) | 6 | 7 | 9 | 9 | 14 | 13 | 13 | 9 | 8 | 8 | 9 | 10 | 116 |
| Average snowfall (mm) | 73 | 27 | 11 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 30 | 152 |
| Average snowfall days (days) | 10 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 | 27 |
| Average relative humidity (%) | 87 | 83 | 72 | 69 | 75 | 75 | 69 | 66 | 69 | 76 | 83 | 87 | 76 |
| Average wind speed (km/h) | 12 | 14 | 14 | 13 | 12 | 11 | 10 | 10 | 10 | 11 | 13 | 12 | 12 |
| Average daily daylight hours (h) | 8 | 10 | 11 | 13 | 15 | 16 | 15 | 14 | 12 | 10 | 9 | 8 | 12 |
| Average daily sunshine hours (h) | 3 | 3 | 6 | 9 | 9 | 10 | 10 | 10 | 8 | 5 | 4 | 4 | 7 |
| Average cloud coverage (%) | 62 | 58 | 47 | 36 | 40 | 34 | 32 | 26 | 35 | 43 | 55 | 61 | 44 |
| Average UV index | 2 | 2 | 3 | 4 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 2 | 4 |
The best time to visit Brno is from mid-May to mid-September, when temperatures are warmest (18–27°C), daylight is long, and the city is lively with festivals, outdoor events, and blooming parks. These months offer the most pleasant weather for sightseeing, hiking, and enjoying Brno’s vibrant cultural life.
The least favourable time to visit is from November to February, when Brno is coldest, daylight hours are shortest, and rain, snow, and clouds are most frequent. While winter brings festive charm, outdoor activities can be limited by chilly, damp, and unpredictable weather.
Brno has a temperate continental climate with warm summers (22–27°C), cold winters (–3 to 4°C), and moderate rainfall. There are four distinct seasons, with significant temperature swings and frequent clouds in winter.
Summer temperatures in Brno typically reach 22–27°C, with occasional peaks above 30°C in July and August. Nights are mild, and rain showers or thunderstorms are common, but most days are sunny and pleasant.
Yes, snow is common in Brno from December to March, but it is usually light and melts quickly. Cold snaps can bring heavier snow and frosty nights, especially in January and February.
Rain falls year-round, but June and July are usually the wettest months, with up to 85–90 mm of rain and frequent thunderstorms. Spring and autumn also see moderate rainfall, while winter is drier but cloudier.
Brno enjoys about 1,850–2,000 hours of sunshine annually. July and August are the sunniest months, with up to 8 hours of sunshine per day, while December and January average only 1–2 hours daily.
Bring warm, waterproof layers and insulated boots for winter. In spring and autumn, pack layers and a rain jacket. For summer, light, breathable clothes, sun protection, and an umbrella are useful for sudden showers.
Late spring to early autumn is best for outdoor activities, with warm temperatures and long days. Winter is ideal for festive events but less suitable for hiking or extensive exploration due to cold and short daylight.
The warmest month, with the highest average maximum temperature, is August (26.2 °C). The month with the lowest average maximum temperature is January (0.4 °C). Overall, the average maximum temperature over the whole year is 13.9 °C.
The month with the highest average minimum temperature is August (14.6 °C). The coldest month, with the lowest average minimum temperature, is January (-3.9 °C). Overall, the average minimum temperature over the whole year is 5.7 °C.
The wettest month, with the highest amount of precipitation, is May (40.8 mm). The driest month, with the least amount of precipitation, is February (12.9 mm). Over the whole year there are 249.7 mm of rainfall on average.
The month with the most days of rain is May (13.7 days). The month with the fewest days of rain is January (6.4 days). Over the whole year there are 116.1 days of rain on average.
The month with the most snowfall is January (73.3 mm). The months with the least snowfall are May, June, July, August and September (0 mm). Over the whole year there are 151.9 mm of snowfall on average.
The month with the most days of snowfall is January (10.3 days). The month with the fewest days of snowfall is June (0 days). Over the whole year there are 27.1 days of snowfall on average.
The month with the highest average relative humidity is January (86.7 %). The month with the lowest average relative humidity is August (65.6 %). The overall average relative humidity over the whole year is 75.9 %.
The windiest month, with the highest average wind speed, is March (13.9 km/h). The calmest month, with the lowest average wind speed, is August (9.5 km/h). The overall average wind speed over the whole year is 11.7 km/h.
The month with the cloudiest skies, so the highest cloud coverage, is January (61.9 %). The month with the clearest skies, so the lowest cloud coverage, is August (26.4 %). Over the whole year there is an average cloud coverage of 44.2 %.
The month with the longest days, so the most daylight, is June (Average daylight: 16 h). The month with the shortest days, so the least daylight, is December (Average daylight: 8 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is August (Average sunshine: 10.2 h). The month with the least sunshine per day is February (Average sunshine: 3 h). Over the whole year there are 6.8 h of sunlight per day on average.
The month with the highest average UV index is July (UV index: 6). The months with the lowest average UV index are January, February, November and December (UV index: 2). Over the whole year the average UV index is 3.5.
