In August, Saint-Brieuc typically sees daytime highs of 20.8°C and overnight lows around 13.0°C. Compared to the annual average high of 14.1°C, August runs +6.7°C.
August in Saint-Brieuc averages a daytime high of 20.8°C and an overnight low of 13.0°C.
August runs +6.7°C compared to Saint-Brieuc's annual average high of 14.1°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 20.8°C and cooler evenings around 13.0°C.