In July, Rennes typically sees daytime highs of 23.4°C and overnight lows around 12.3°C. Compared to the annual average high of 15.3°C, July runs +8.1°C.
July in Rennes averages a daytime high of 23.4°C and an overnight low of 12.3°C.
July runs +8.1°C compared to Rennes's annual average high of 15.3°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 23.4°C and cooler evenings around 12.3°C.