Whether you're visiting Hainan in China during the peak of June (31°C (88°F)) or the cooler months around January (24°C (75°F)), knowing what to pack starts with understanding the local climate. Our overview is based on data from Sanya, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
The weather in Hainan during January, February, March and December is comfortably warm, with average temperatures ranging from 24°C (75°F) to 27°C (81°F).
June, July and August are generally the hottest months of the year.
When it comes to rainfall, Hainan sees significant variations throughout the year. July tends to be the wettest, receiving 285 mm (11 in) of rain, while January is much drier with just 17 mm (0.7 in). Travelers should note that the rainy season falls during June, July, August and September, bringing substantial precipitation ranging from 231 mm (9.1 in) to 285 mm (11 in) monthly. The driest period occurs in January and February, with rainfall remaining under 18 mm (0.7 in).
