Climate averages 1991–2020
Banja Luka weather
in April.
A mild, wet month: the 7th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Banja Luka: daytime highs average 17.1°C and nights cool to about 5.5°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 92 mm of rain on roughly 13 days, which makes April a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 27 min on an average April day.
The nearest other city in this atlas is Zenica (85 km away). In April its highs average 16.2°C, 0.9°C cooler than Banja Luka, with 106 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Banja Luka ranks 2nd of 7 for the warmest April highs and 1st of 7 for the driest April (rainfall, lowest first). The mean April high of those 7 cities is 16.2°C; Banja Luka is 0.9°C warmer than that mean.
From April to May, average highs rise by 4.2°C to 21.3°C, and monthly rainfall rises from 92 mm to 112 mm.
The annual picture
April 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, selected | 17.1°C5.5°C | 5.5°C | 92 | 12.7 | 13.513 h |
| May | 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
April in nearby cities
- Zenica in AprilBosnia and Herzegovina · 85 kmHigh 16.2°C · Low 5.9°C · 106 mm rain
- Bihać in AprilBosnia and Herzegovina · 105 kmHigh 16.3°C · Low 6.0°C · 110 mm rain
- Tuzla in AprilBosnia and Herzegovina · 119 kmHigh 16.8°C · Low 5.6°C · 96 mm rain
- Ilidža in AprilBosnia and Herzegovina · 137 kmHigh 14.7°C · Low 5.3°C · 109 mm rain
- Sarajevo in AprilBosnia and Herzegovina · 138 kmHigh 14.9°C · Low 5.0°C · 109 mm rain
- Osijek in AprilCroatia · 145 kmHigh 17.5°C · Low 7.0°C · 55 mm rain
- Zagreb in AprilCroatia · 150 kmHigh 16.9°C · Low 6.1°C · 67 mm rain
- Split in AprilCroatia · 154 kmHigh 17.2°C · Low 9.5°C · 99 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.