In September, Honmachi typically sees daytime highs of 29.1°C and overnight lows around 19.3°C. Compared to the annual average high of 21.4°C, September runs +7.7°C.
September in Honmachi averages a daytime high of 29.1°C and an overnight low of 19.3°C.
September runs +7.7°C compared to Honmachi's annual average high of 21.4°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 29.1°C and cooler evenings around 19.3°C.