In October, Karatsu typically sees daytime highs of 22.0°C and overnight lows around 14.6°C. Compared to the annual average high of 19.4°C, October runs +2.6°C.
October in Karatsu averages a daytime high of 22.0°C and an overnight low of 14.6°C.
October runs +2.6°C compared to Karatsu's annual average high of 19.4°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 22.0°C and cooler evenings around 14.6°C.