In September, Zhoushan typically sees daytime highs of 27.8°C and overnight lows around 21.8°C. Compared to the annual average high of 20.1°C, September runs +7.7°C.
September in Zhoushan averages a daytime high of 27.8°C and an overnight low of 21.8°C.
September runs +7.7°C compared to Zhoushan's annual average high of 20.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.8°C and cooler evenings around 21.8°C.