In September, Shimonoseki typically sees daytime highs of 26.3°C and overnight lows around 19.8°C. Compared to the annual average high of 18.8°C, September runs +7.6°C.
September in Shimonoseki averages a daytime high of 26.3°C and an overnight low of 19.8°C.
September runs +7.6°C compared to Shimonoseki's annual average high of 18.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.3°C and cooler evenings around 19.8°C.