In December, Saint-Brieuc typically sees daytime highs of 8.7°C and overnight lows around 4.2°C. Compared to the annual average high of 14.1°C, December runs -5.4°C.
December in Saint-Brieuc averages a daytime high of 8.7°C and an overnight low of 4.2°C.
December runs -5.4°C compared to Saint-Brieuc's annual average high of 14.1°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 8.7°C and cooler evenings around 4.2°C.