In September, Iwata typically sees daytime highs of 27.3°C and overnight lows around 20.7°C. Compared to the annual average high of 20.0°C, September runs +7.3°C.
September in Iwata averages a daytime high of 27.3°C and an overnight low of 20.7°C.
September runs +7.3°C compared to Iwata's annual average high of 20.0°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.3°C and cooler evenings around 20.7°C.