In August, Saint-Malo typically sees daytime highs of 20.9°C and overnight lows around 13.6°C. Compared to the annual average high of 14.2°C, August runs +6.7°C.
August in Saint-Malo averages a daytime high of 20.9°C and an overnight low of 13.6°C.
August runs +6.7°C compared to Saint-Malo's annual average high of 14.2°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 20.9°C and cooler evenings around 13.6°C.