In October, Onomichi typically sees daytime highs of 21.5°C and overnight lows around 13.2°C. Compared to the annual average high of 19.2°C, October runs +2.3°C.
October in Onomichi averages a daytime high of 21.5°C and an overnight low of 13.2°C.
October runs +2.3°C compared to Onomichi's annual average high of 19.2°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 21.5°C and cooler evenings around 13.2°C.