In May, Boulogne-Billancourt typically sees daytime highs of 18.2°C and overnight lows around 7.9°C. Compared to the annual average high of 14.7°C, May runs +3.6°C.
May in Boulogne-Billancourt averages a daytime high of 18.2°C and an overnight low of 7.9°C.
May runs +3.6°C compared to Boulogne-Billancourt's annual average high of 14.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.2°C and cooler evenings around 7.9°C.