In September, Hamamatsu typically sees daytime highs of 27.5°C and overnight lows around 20.3°C. Compared to the annual average high of 20.1°C, September runs +7.4°C.
September in Hamamatsu averages a daytime high of 27.5°C and an overnight low of 20.3°C.
September runs +7.4°C compared to Hamamatsu's annual average high of 20.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.5°C and cooler evenings around 20.3°C.