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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 87°F, while the coldest is January averaging around 27°F at night. Precipitation is fairly even year-round, totalling about 38 inches.
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 (°F) | 42 | 46 | 57 | 67 | 75 | 82 | 86 | 87 | 75 | 67 | 55 | 43 |
| Avg temp (°F) | 35 | 37 | 45 | 55 | 63 | 70 | 74 | 74 | 64 | 56 | 47 | 36 |
| Avg low (°F) | 27 | 28 | 34 | 44 | 51 | 58 | 61 | 60 | 52 | 44 | 37 | 29 |
| Precipitation (in) | 3.3 | 2.4 | 3.4 | 3.0 | 4.0 | 3.2 | 3.2 | 2.5 | 4.5 | 2.6 | 2.9 | 2.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 42 | 46 | 57 | 67 | 75 | 82 |
| Avg temp (°F) | 35 | 37 | 45 | 55 | 63 | 70 |
| Avg low (°F) | 27 | 28 | 34 | 44 | 51 | 58 |
| Precipitation (in) | 3.3 | 2.4 | 3.4 | 3.0 | 4.0 | 3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 87 | 75 | 67 | 55 | 43 |
| Avg temp (°F) | 74 | 74 | 64 | 56 | 47 | 36 |
| Avg low (°F) | 61 | 60 | 52 | 44 | 37 | 29 |
| Precipitation (in) | 3.2 | 2.5 | 4.5 | 2.6 | 2.9 | 2.9 |
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 ≥ 90°F (days) | — | — | — | — | 0.7 | 5 | 7 | 9 | 1 | — | — | — |
| Days with low ≤ 32°F (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 ≥ 90°F (days) | — | — | — | — | 0.7 | 5 |
| Days with low ≤ 32°F (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 ≥ 90°F (days) | 7 | 9 | 1 | — | — | — |
| Days with low ≤ 32°F (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.