Climate averages 1991–2020
Banja Luka weather
in May.
A mild, wet month: the 5th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Banja Luka: daytime highs average 21.3°C and nights cool to about 10.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 112 mm of rain on roughly 14 days, which makes May a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 48 min on an average May day.
The nearest other city in this atlas is Zenica (85 km away). In May its highs average 20.6°C, 0.7°C cooler than Banja Luka, with 120 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Banja Luka ranks 2nd of 7 for the warmest May highs and 4th of 7 for the driest May (rainfall, lowest first). The mean May high of those 7 cities is 20.6°C; Banja Luka is 0.6°C warmer than that mean.
From May to June, average highs rise by 3.7°C to 25.0°C, and monthly rainfall falls from 112 mm to 97 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Banja Luka climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.3°C-2.8°C | -2.8°C | 70 | 10.4 | 9.29 h |
| February | 7.4°C-2.1°C | -2.1°C | 70 | 10.4 | 10.410 h |
| March | 12.3°C1.3°C | 1.3°C | 79 | 11.5 | 11.912 h |
| April | 17.1°C5.5°C | 5.5°C | 92 | 12.7 | 13.513 h |
| May, selected | 21.3°C10.1°C | 10.1°C | 112 | 13.5 | 14.815 h |
| June | 25.0°C14.2°C | 14.2°C | 97 | 11.9 | 15.516 h |
| July | 27.4°C16.3°C | 16.3°C | 87 | 10.4 | 15.215 h |
| August | 27.5°C16.3°C | 16.3°C | 72 | 8.8 | 14.114 h |
| September | 22.2°C12.0°C | 12.0°C | 95 | 10.9 | 12.613 h |
| October | 17.4°C7.7°C | 7.7°C | 72 | 9.2 | 11.011 h |
| November | 11.5°C3.2°C | 3.2°C | 85 | 10.2 | 9.610 h |
| December | 6.0°C-1.3°C | -1.3°C | 82 | 11.5 | 8.99 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Zenica in MayBosnia and Herzegovina · 85 kmHigh 20.6°C · Low 10.5°C · 120 mm rain
- Bihać in MayBosnia and Herzegovina · 105 kmHigh 20.5°C · Low 10.4°C · 127 mm rain
- Tuzla in MayBosnia and Herzegovina · 119 kmHigh 21.1°C · Low 10.4°C · 116 mm rain
- Ilidža in MayBosnia and Herzegovina · 137 kmHigh 19.4°C · Low 9.8°C · 110 mm rain
- Sarajevo in MayBosnia and Herzegovina · 138 kmHigh 19.5°C · Low 9.5°C · 110 mm rain
- Osijek in MayCroatia · 145 kmHigh 22.1°C · Low 12.0°C · 69 mm rain
- Zagreb in MayCroatia · 150 kmHigh 21.2°C · Low 10.8°C · 87 mm rain
- Split in MayCroatia · 154 kmHigh 21.6°C · Low 13.8°C · 71 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Banja Luka) is explained once on the Banja Luka year overview and on the Sources, method and limits page.