In December, Sao Mateus typically sees daytime highs of 29.9°C and overnight lows around 21.3°C. Compared to the annual average high of 28.8°C, December runs +1.1°C.
December in Sao Mateus averages a daytime high of 29.9°C and an overnight low of 21.3°C.
December runs +1.1°C compared to Sao Mateus's annual average high of 28.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 29.9°C and cooler evenings around 21.3°C.