In May, Porto Alegre typically sees daytime highs of 21.7°C and overnight lows around 12.5°C. Compared to the annual average high of 24.3°C, May runs -2.6°C.
May in Porto Alegre averages a daytime high of 21.7°C and an overnight low of 12.5°C.
May runs -2.6°C compared to Porto Alegre's annual average high of 24.3°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 21.7°C and cooler evenings around 12.5°C.