In December, Calais typically sees daytime highs of 7.1°C and overnight lows around 3.2°C. Compared to the annual average high of 12.7°C, December runs -5.7°C.
December in Calais averages a daytime high of 7.1°C and an overnight low of 3.2°C.
December runs -5.7°C compared to Calais's annual average high of 12.7°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 7.1°C and cooler evenings around 3.2°C.