Haikou Outlook
Haikou is on the northern edge of the torrid zone, and is part of the Intertropical Convergence Zone. April to October is the active period for tropical storms and typhoons, most of which occur between August and September. May to October is the rainy season with the heaviest rainfall occurring in September. With its location 378 km (235 mi) south of the Tropic of Cancer, the city has a borderline tropical wet and dry climate, just above a humid subtropical climate.