In September, Okayama typically sees daytime highs of 27.6°C and overnight lows around 19.2°C. Compared to the annual average high of 19.8°C, September runs +7.8°C.
September in Okayama averages a daytime high of 27.6°C and an overnight low of 19.2°C.
September runs +7.8°C compared to Okayama's annual average high of 19.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.6°C and cooler evenings around 19.2°C.