In September, Okegawa typically sees daytime highs of 26.5°C and overnight lows around 19.2°C. Compared to the annual average high of 19.5°C, September runs +7.0°C.
September in Okegawa averages a daytime high of 26.5°C and an overnight low of 19.2°C.
September runs +7.0°C compared to Okegawa's annual average high of 19.5°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.5°C and cooler evenings around 19.2°C.