In August, Cergy typically sees daytime highs of 22.9°C and overnight lows around 12.0°C. Compared to the annual average high of 14.6°C, August runs +8.4°C.
August in Cergy averages a daytime high of 22.9°C and an overnight low of 12.0°C.
August runs +8.4°C compared to Cergy's annual average high of 14.6°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 22.9°C and cooler evenings around 12.0°C.