In January, Aachen typically sees daytime highs of 4.0°C and overnight lows around -0.8°C. Compared to the annual average high of 13.2°C, January runs -9.2°C.
January in Aachen averages a daytime high of 4.0°C and an overnight low of -0.8°C.
January runs -9.2°C compared to Aachen's annual average high of 13.2°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 4.0°C and cooler evenings around -0.8°C.