In May, Yilan typically sees daytime highs of 19.7°C and overnight lows around 5.6°C. Compared to the annual average high of 8.6°C, May runs +11.1°C.
May in Yilan averages a daytime high of 19.7°C and an overnight low of 5.6°C.
May runs +11.1°C compared to Yilan's annual average high of 8.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 19.7°C and cooler evenings around 5.6°C.