In September, Niitsu-honcho typically sees daytime highs of 25.5°C and overnight lows around 18.6°C. Compared to the annual average high of 17.1°C, September runs +8.4°C.
September in Niitsu-honcho averages a daytime high of 25.5°C and an overnight low of 18.6°C.
September runs +8.4°C compared to Niitsu-honcho's annual average high of 17.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 18.6°C.