In October, Iwatsuki typically sees daytime highs of 20.9°C and overnight lows around 13.0°C. Compared to the annual average high of 19.6°C, October runs +1.4°C.
October in Iwatsuki averages a daytime high of 20.9°C and an overnight low of 13.0°C.
October runs +1.4°C compared to Iwatsuki's annual average high of 19.6°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 20.9°C and cooler evenings around 13.0°C.