In December, Aalst typically sees daytime highs of 6.2°C and overnight lows around 1.0°C. Compared to the annual average high of 13.9°C, December runs -7.7°C.
December in Aalst averages a daytime high of 6.2°C and an overnight low of 1.0°C.
December runs -7.7°C compared to Aalst's annual average high of 13.9°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 6.2°C and cooler evenings around 1.0°C.