In May, Blois typically sees daytime highs of 18.9°C and overnight lows around 7.5°C. Compared to the annual average high of 15.6°C, May runs +3.4°C.
May in Blois averages a daytime high of 18.9°C and an overnight low of 7.5°C.
May runs +3.4°C compared to Blois's annual average high of 15.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.9°C and cooler evenings around 7.5°C.