In May, Oyama typically sees daytime highs of 22.6°C and overnight lows around 12.2°C. Compared to the annual average high of 19.1°C, May runs +3.6°C.
May in Oyama averages a daytime high of 22.6°C and an overnight low of 12.2°C.
May runs +3.6°C compared to Oyama's annual average high of 19.1°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 22.6°C and cooler evenings around 12.2°C.