In October, Rennes typically sees daytime highs of 16.2°C and overnight lows around 7.6°C. Compared to the annual average high of 15.3°C, October runs +0.9°C.
October in Rennes averages a daytime high of 16.2°C and an overnight low of 7.6°C.
October runs +0.9°C compared to Rennes's annual average high of 15.3°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 16.2°C and cooler evenings around 7.6°C.