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Banja Luka, Bosnia and Herzegovina climate
Cfa Humid subtropical
Banja Luka has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 30°C, while the coldest is January averaging around −3°C at night. Precipitation is fairly even year-round, totalling about 962 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Banja Luka climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 8 | 14 | 19 | 24 | 28 | 30 | 30 | 24 | 19 | 13 | 6 |
| Avg temp (°C) | 1 | 3 | 7 | 13 | 17 | 21 | 23 | 23 | 18 | 13 | 8 | 2 |
| Avg low (°C) | −3 | −2 | 1 | 6 | 10 | 14 | 16 | 16 | 11 | 7 | 3 | −2 |
| Precipitation (mm) | 84 | 61 | 86 | 76 | 102 | 80 | 80 | 65 | 115 | 66 | 74 | 73 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 8 | 14 | 19 | 24 | 28 |
| Avg temp (°C) | 1 | 3 | 7 | 13 | 17 | 21 |
| Avg low (°C) | −3 | −2 | 1 | 6 | 10 | 14 |
| Precipitation (mm) | 84 | 61 | 86 | 76 | 102 | 80 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 24 | 19 | 13 | 6 |
| Avg temp (°C) | 23 | 23 | 18 | 13 | 8 | 2 |
| Avg low (°C) | 16 | 16 | 11 | 7 | 3 | −2 |
| Precipitation (mm) | 80 | 65 | 115 | 66 | 74 | 73 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 9 | 10 | 9 | 11 | 9 | 8 | 6 | 8 | 8 | 9 | 10 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.7 | 5 | 7 | 9 | 1 | — | — | — |
| Days with low ≤ 0°C (days) | 14 | 11 | 8 | 1 | — | — | — | — | — | 1 | 5 | 12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 9 | 10 | 9 | 11 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.7 | 5 |
| Days with low ≤ 0°C (days) | 14 | 11 | 8 | 1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 6 | 8 | 8 | 9 | 10 |
| Days with high ≥ 32°C (days) | 7 | 9 | 1 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 1 | 5 | 12 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 69 | 67 | 67 | 65 | 58 | 47 | 45 | 58 | 63 | 71 | 71 |
| Relative humidity (%) | 91 | 87 | 81 | 77 | 74 | 70 | 61 | 58 | 68 | 78 | 87 | 92 |
| Wind speed (mph) | 2.0 | 2.2 | 2.0 | 1.5 | 1.4 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.4 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 69 | 67 | 67 | 65 | 58 |
| Relative humidity (%) | 91 | 87 | 81 | 77 | 74 | 70 |
| Wind speed (mph) | 2.0 | 2.2 | 2.0 | 1.5 | 1.4 | 1.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 45 | 58 | 63 | 71 | 71 |
| Relative humidity (%) | 61 | 58 | 68 | 78 | 87 | 92 |
| Wind speed (mph) | 1.3 | 1.3 | 1.3 | 1.3 | 1.4 | 1.7 |
Methodology & sources
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 12 years of daily observations at Banja Luka, a weather station, inside the city. 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.