In September, Nanto-shi typically sees daytime highs of 25.8°C and overnight lows around 17.6°C. Compared to the annual average high of 17.5°C, September runs +8.3°C.
September in Nanto-shi averages a daytime high of 25.8°C and an overnight low of 17.6°C.
September runs +8.3°C compared to Nanto-shi's annual average high of 17.5°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 25.8°C and cooler evenings around 17.6°C.