In May, Siwan typically sees daytime highs of 38.2°C and overnight lows around 25.2°C. Compared to the annual average high of 31.0°C, May runs +7.2°C.
May in Siwan averages a daytime high of 38.2°C and an overnight low of 25.2°C.
May runs +7.2°C compared to Siwan's annual average high of 31.0°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 38.2°C and cooler evenings around 25.2°C.