In January, Iwakuni typically sees daytime highs of 7.8°C and overnight lows around 0.6°C. Compared to the annual average high of 18.6°C, January runs -10.8°C.
January in Iwakuni averages a daytime high of 7.8°C and an overnight low of 0.6°C.
January runs -10.8°C compared to Iwakuni's annual average high of 18.6°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 7.8°C and cooler evenings around 0.6°C.