In September, Nishi-Tokyo-shi typically sees daytime highs of 26.5°C and overnight lows around 20.2°C. Compared to the annual average high of 19.4°C, September runs +7.1°C.
September in Nishi-Tokyo-shi averages a daytime high of 26.5°C and an overnight low of 20.2°C.
September runs +7.1°C compared to Nishi-Tokyo-shi's annual average high of 19.4°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.5°C and cooler evenings around 20.2°C.