In December, Koblenz typically sees daytime highs of 4.0°C and overnight lows around -0.6°C. Compared to the annual average high of 13.1°C, December runs -9.0°C.
December in Koblenz averages a daytime high of 4.0°C and an overnight low of -0.6°C.
December runs -9.0°C compared to Koblenz's annual average high of 13.1°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 4.0°C and cooler evenings around -0.6°C.