In October, Iwakuni typically sees daytime highs of 21.3°C and overnight lows around 12.8°C. Compared to the annual average high of 18.6°C, October runs +2.7°C.
October in Iwakuni averages a daytime high of 21.3°C and an overnight low of 12.8°C.
October runs +2.7°C compared to Iwakuni's annual average high of 18.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 21.3°C and cooler evenings around 12.8°C.