In September, Sao Mateus typically sees daytime highs of 27.6°C and overnight lows around 18.3°C. Compared to the annual average high of 28.8°C, September runs -1.2°C.
September in Sao Mateus averages a daytime high of 27.6°C and an overnight low of 18.3°C.
September runs -1.2°C compared to Sao Mateus's annual average high of 28.8°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 27.6°C and cooler evenings around 18.3°C.