In September, Kertosono typically sees daytime highs of 32.8°C and overnight lows around 21.0°C. Compared to the annual average high of 32.1°C, September runs +0.7°C.
September in Kertosono averages a daytime high of 32.8°C and an overnight low of 21.0°C.
September runs +0.7°C compared to Kertosono's annual average high of 32.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 32.8°C and cooler evenings around 21.0°C.