In September, Port Moresby typically sees daytime highs of 30.1°C and overnight lows around 23.0°C. Compared to the annual average high of 30.6°C, September runs -0.4°C.
September in Port Moresby averages a daytime high of 30.1°C and an overnight low of 23.0°C.
September runs -0.4°C compared to Port Moresby's annual average high of 30.6°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 30.1°C and cooler evenings around 23.0°C.