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Brno, Czechia climate
Cfb Oceanic / temperate
Brno has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 79°F, while the coldest is January averaging around 21°F at night. Around 22 inches of precipitation falls each year, peaking in June (2.5 inches) and easing off in April (1.0 inches).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsBrno climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 40 | 49 | 60 | 68 | 74 | 79 | 79 | 68 | 57 | 45 | 34 |
| Avg temp (°F) | 27 | 32 | 41 | 51 | 59 | 65 | 68 | 68 | 59 | 48 | 39 | 29 |
| Avg low (°F) | 21 | 23 | 32 | 40 | 48 | 54 | 57 | 57 | 50 | 40 | 33 | 24 |
| Precipitation (in) | 2.3 | 1.9 | 1.3 | 1.0 | 2.3 | 2.5 | 2.4 | 2.3 | 2.0 | 1.3 | 1.3 | 1.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 40 | 49 | 60 | 68 | 74 |
| Avg temp (°F) | 27 | 32 | 41 | 51 | 59 | 65 |
| Avg low (°F) | 21 | 23 | 32 | 40 | 48 | 54 |
| Precipitation (in) | 2.3 | 1.9 | 1.3 | 1.0 | 2.3 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 79 | 68 | 57 | 45 | 34 |
| Avg temp (°F) | 68 | 68 | 59 | 48 | 39 | 29 |
| Avg low (°F) | 57 | 57 | 50 | 40 | 33 | 24 |
| Precipitation (in) | 2.4 | 2.3 | 2.0 | 1.3 | 1.3 | 1.5 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 9 | 9 | 7 | 11 | 9 | 10 | 8 | 8 | 9 | 10 | 11 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | 0.6 | 2 | 2 | — | — | — | — |
| Days with low ≤ 32°F (days) | 13 | 12 | 10 | 3 | 0.2 | — | — | — | — | 3 | 6 | 12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 9 | 9 | 7 | 11 | 9 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | 0.6 |
| Days with low ≤ 32°F (days) | 13 | 12 | 10 | 3 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 8 | 8 | 9 | 10 | 11 |
| Days with high ≥ 90°F (days) | 2 | 2 | — | — | — | — |
| Days with low ≤ 32°F (days) | — | — | — | 3 | 6 | 12 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 74 | 70 | 65 | 67 | 69 | 65 | 61 | 65 | 72 | 77 | 76 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 5 | 4 | 3 | 5 | 5 | 6 | 3 | 2 | 2 |
| Partly cloudy days (30–70%) | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 12 | 9 | 8 | 7 | 7 |
| Cloudy days (≥ 70%) | 22 | 19 | 19 | 16 | 17 | 17 | 16 | 14 | 16 | 19 | 21 | 22 |
| Relative humidity (%) | 92 | 88 | 81 | 74 | 70 | 66 | 62 | 62 | 70 | 80 | 89 | 93 |
| Wind speed (mph) | 6.7 | 7.0 | 6.9 | 6.3 | 6.0 | 5.5 | 5.5 | 5.1 | 5.7 | 5.9 | 6.3 | 6.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 74 | 70 | 65 | 67 | 69 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 5 | 4 | 3 |
| Partly cloudy days (30–70%) | 7 | 7 | 8 | 9 | 9 | 10 |
| Cloudy days (≥ 70%) | 22 | 19 | 19 | 16 | 17 | 17 |
| Relative humidity (%) | 92 | 88 | 81 | 74 | 70 | 66 |
| Wind speed (mph) | 6.7 | 7.0 | 6.9 | 6.3 | 6.0 | 5.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 61 | 65 | 72 | 77 | 76 |
| Clear days (≤ 30% cloud) | 5 | 5 | 6 | 3 | 2 | 2 |
| Partly cloudy days (30–70%) | 10 | 12 | 9 | 8 | 7 | 7 |
| Cloudy days (≥ 70%) | 16 | 14 | 16 | 19 | 21 | 22 |
| Relative humidity (%) | 62 | 62 | 70 | 80 | 89 | 93 |
| Wind speed (mph) | 5.5 | 5.1 | 5.7 | 5.9 | 6.3 | 6.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 22 years of daily observations at Turany, a weather station, about 8 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.