In May, Rio Branco typically sees daytime highs of 30.3°C and overnight lows around 20.6°C. Compared to the annual average high of 31.2°C, May runs -1.0°C.
May in Rio Branco averages a daytime high of 30.3°C and an overnight low of 20.6°C.
May runs -1.0°C compared to Rio Branco's annual average high of 31.2°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 30.3°C and cooler evenings around 20.6°C.