In December, Rouen typically sees daytime highs of 6.9°C and overnight lows around 1.5°C. Compared to the annual average high of 14.3°C, December runs -7.4°C.
December in Rouen averages a daytime high of 6.9°C and an overnight low of 1.5°C.
December runs -7.4°C compared to Rouen's annual average high of 14.3°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 6.9°C and cooler evenings around 1.5°C.