In December, Aachen typically sees daytime highs of 5.1°C and overnight lows around 0.3°C. Compared to the annual average high of 13.2°C, December runs -8.1°C.
December in Aachen averages a daytime high of 5.1°C and an overnight low of 0.3°C.
December runs -8.1°C compared to Aachen's annual average high of 13.2°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 5.1°C and cooler evenings around 0.3°C.