October in Sanya averages a daily high of 29.2°C with nights around 21.5°C. Expect roughly 13.9 wet days totalling 321.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sanya is November–March.
Based on SANYA, CH (8.8km), 1995–2024. 24 years of October data.