In September, Port-au-Prince typically sees daytime highs of 33.1°C and overnight lows around 25.1°C. Compared to the annual average high of 31.9°C, September runs +1.2°C.
September in Port-au-Prince averages a daytime high of 33.1°C and an overnight low of 25.1°C.
September runs +1.2°C compared to Port-au-Prince's annual average high of 31.9°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 33.1°C and cooler evenings around 25.1°C.