In September, Nantes typically sees daytime highs of 22.1°C and overnight lows around 11.2°C. Compared to the annual average high of 16.4°C, September runs +5.7°C.
September in Nantes averages a daytime high of 22.1°C and an overnight low of 11.2°C.
September runs +5.7°C compared to Nantes's annual average high of 16.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 22.1°C and cooler evenings around 11.2°C.