What is the approximate temperature in Hainan in October and November? Can I wear a bikini?

At around 26 degrees, you can wear a bikini all year round in Hainan. The constant temperature of sea water is about 28 degrees.

Winter is between 16 and 24 degrees, with temperatures above 20 degrees. Except when the cold air moves south or it is rainy, it will feel colder, while the rest is relatively warm.

The period when locals find it cold is January or February. After this time, it is almost like summer.