In October, Koriyama typically sees daytime highs of 19.1°C and overnight lows around 9.7°C. Compared to the annual average high of 17.1°C, October runs +1.9°C.
October in Koriyama averages a daytime high of 19.1°C and an overnight low of 9.7°C.
October runs +1.9°C compared to Koriyama's annual average high of 17.1°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 19.1°C and cooler evenings around 9.7°C.