In September, Sanya typically sees daytime highs of 30.3°C and overnight lows around 24.9°C. Compared to the annual average high of 28.3°C, September runs +1.9°C.
September in Sanya averages a daytime high of 30.3°C and an overnight low of 24.9°C.
September runs +1.9°C compared to Sanya's annual average high of 28.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 30.3°C and cooler evenings around 24.9°C.