In September, Ichinomiya typically sees daytime highs of 27.9°C and overnight lows around 17.9°C. Compared to the annual average high of 20.1°C, September runs +7.8°C.
September in Ichinomiya averages a daytime high of 27.9°C and an overnight low of 17.9°C.
September runs +7.8°C compared to Ichinomiya's annual average high of 20.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.9°C and cooler evenings around 17.9°C.