Climate averages 1991–2020
Banja Luka weather
in January.
A cold, moderately wet month: the coolest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Banja Luka: daytime highs average 5.3°C and nights cool to about -2.8°C. By daytime temperature it is the coolest month of the year.
Expect about 70 mm of rain on roughly 10 days, which makes January a moderately wet month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 9 h 13 min on an average January day.
The nearest other city in this atlas is Zenica (85 km away). In January its highs average 5.2°C, about as warm as Banja Luka, with 76 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Banja Luka ranks 3rd of 7 for the warmest January highs and 2nd of 7 for the driest January (rainfall, lowest first). The mean January high of those 7 cities is 5.5°C; Banja Luka is 0.2°C cooler than that mean.
From January to February, average highs rise by 2.1°C to 7.4°C, and monthly rainfall stays at 70 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Zenica in JanuaryBosnia and Herzegovina · 85 kmHigh 5.2°C · Low -2.7°C · 76 mm rain
- Bihać in JanuaryBosnia and Herzegovina · 105 kmHigh 5.5°C · Low -1.4°C · 90 mm rain
- Tuzla in JanuaryBosnia and Herzegovina · 119 kmHigh 5.0°C · Low -3.5°C · 67 mm rain
- Ilidža in JanuaryBosnia and Herzegovina · 137 kmHigh 4.6°C · Low -2.9°C · 83 mm rain
- Sarajevo in JanuaryBosnia and Herzegovina · 138 kmHigh 4.5°C · Low -3.3°C · 83 mm rain
- Osijek in JanuaryCroatia · 145 kmHigh 4.5°C · Low -2.2°C · 42 mm rain
- Zagreb in JanuaryCroatia · 150 kmHigh 4.7°C · Low -2.2°C · 49 mm rain
- Split in JanuaryCroatia · 154 kmHigh 10.0°C · Low 3.8°C · 121 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.