In September, Altamira typically sees daytime highs of 33.1°C and overnight lows around 21.8°C. Compared to the annual average high of 31.4°C, September runs +1.7°C.
September in Altamira averages a daytime high of 33.1°C and an overnight low of 21.8°C.
September runs +1.7°C compared to Altamira's annual average high of 31.4°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 33.1°C and cooler evenings around 21.8°C.