In September, Olongapo typically sees daytime highs of 29.6°C and overnight lows around 23.2°C. Compared to the annual average high of 30.5°C, September runs -0.9°C.
September in Olongapo averages a daytime high of 29.6°C and an overnight low of 23.2°C.
September runs -0.9°C compared to Olongapo's annual average high of 30.5°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 29.6°C and cooler evenings around 23.2°C.