The 10-day span for Haikou runs from a high near 75° on Wednesday down to 69° overnight on Thursday. Models drop roughly 0.94 in of precipitation across the stretch — watch Thursday (86%). Expect a blustery spell — gusts near 30 mph on Friday. Right now Haikou is about 21° cooler than nearby Zhanjiang. Longer view: a tropical climate — warm all year, with the calendar split into wet and dry rather than hot and cold.
Haikou, China · 20.03°N, 110.35°E · Asia/Shanghai · Forecast computed for these exact coordinates