In August, Rio Branco typically sees daytime highs of 33.1°C and overnight lows around 19.3°C. Compared to the annual average high of 31.2°C, August runs +1.9°C.
August in Rio Branco averages a daytime high of 33.1°C and an overnight low of 19.3°C.
August runs +1.9°C compared to Rio Branco's annual average high of 31.2°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 33.1°C and cooler evenings around 19.3°C.