In May, Colombo typically sees daytime highs of 20.8°C and overnight lows around 10.6°C. Compared to the annual average high of 22.9°C, May runs -2.1°C.
May in Colombo averages a daytime high of 20.8°C and an overnight low of 10.6°C.
May runs -2.1°C compared to Colombo's annual average high of 22.9°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 20.8°C and cooler evenings around 10.6°C.