In September, Dumai typically sees daytime highs of 31.9°C and overnight lows around 22.2°C. Compared to the annual average high of 31.9°C, September runs -0.0°C.
September in Dumai averages a daytime high of 31.9°C and an overnight low of 22.2°C.
September runs -0.0°C compared to Dumai's annual average high of 31.9°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 31.9°C and cooler evenings around 22.2°C.