In December, Banja Luka typically sees daytime highs of 5.0°C and overnight lows around -2.1°C. Compared to the annual average high of 16.1°C, December runs -11.0°C.
December in Banja Luka averages a daytime high of 5.0°C and an overnight low of -2.1°C.
December runs -11.0°C compared to Banja Luka's annual average high of 16.1°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 5.0°C and cooler evenings around -2.1°C.