Climate averages 1991–2020
Banja Luka weather
in December.
A cold, moderately wet month: the 11th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Banja Luka: daytime highs average 6.0°C and nights cool to about -1.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 82 mm of rain on roughly 12 days, which makes December a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 52 min on an average December day.
The nearest other city in this atlas is Zenica (85 km away). In December its highs average 6.1°C, about as warm as Banja Luka, with 92 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Banja Luka ranks 4th of 7 for the warmest December highs and 2nd of 7 for the driest December (rainfall, lowest first). The mean December high of those 7 cities is 6.3°C; Banja Luka is 0.3°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 5.3°C, and monthly rainfall falls from 82 mm to 70 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Zenica in DecemberBosnia and Herzegovina · 85 kmHigh 6.1°C · Low -1.4°C · 92 mm rain
- Bihać in DecemberBosnia and Herzegovina · 105 kmHigh 6.3°C · Low -0.2°C · 116 mm rain
- Tuzla in DecemberBosnia and Herzegovina · 119 kmHigh 5.8°C · Low -2.0°C · 77 mm rain
- Ilidža in DecemberBosnia and Herzegovina · 137 kmHigh 5.6°C · Low -1.3°C · 110 mm rain
- Sarajevo in DecemberBosnia and Herzegovina · 138 kmHigh 5.5°C · Low -1.7°C · 110 mm rain
- Osijek in DecemberCroatia · 145 kmHigh 5.1°C · Low -0.8°C · 54 mm rain
- Zagreb in DecemberCroatia · 150 kmHigh 5.1°C · Low -1.2°C · 68 mm rain
- Split in DecemberCroatia · 154 kmHigh 11.1°C · Low 5.1°C · 173 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.