In May, Pematangsiantar typically sees daytime highs of 31.1°C and overnight lows around 20.3°C. Compared to the annual average high of 30.4°C, May runs +0.7°C.
May in Pematangsiantar averages a daytime high of 31.1°C and an overnight low of 20.3°C.
May runs +0.7°C compared to Pematangsiantar's annual average high of 30.4°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 31.1°C and cooler evenings around 20.3°C.