In December, Sanya typically sees daytime highs of 25.1°C and overnight lows around 18.9°C. Compared to the annual average high of 28.3°C, December runs -3.3°C.
December in Sanya averages a daytime high of 25.1°C and an overnight low of 18.9°C.
December runs -3.3°C compared to Sanya's annual average high of 28.3°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 25.1°C and cooler evenings around 18.9°C.