The Hainan Provincial Meteorological Observatory issued a warning on the 24th, forecasting the formation of a tropical depression in the South China Sea.
From now till September 26th, Hainan Island and the western-central South China Sea are expected to experience heavy rainfall and strong winds as a result of the weather system’s approach.

Current meteorological data indicates the development of a tropical cloud cluster in the western-central South China Sea. It is expected to intensify into a tropical depression and move in a westward direction, gaining some strength along the way. The depression is forecasted to make landfall along the central coastal areas of Vietnam during the night of Monday, September 25th.
Hainan Island is expected to witness heavy rainfall and strong winds.
Around September 29th, a new tropical cyclone is expected to form in the eastern-central South China Sea. This cyclone is predicted to move north-westward, intensify, and gradually approach the western parts of Guangdong and the eastern coastal regions of Hainan, potentially affecting the region with more adverse weather conditions.
Detailed Weather Forecast
From September 25th to 26th, the south-eastern half of Hainan Island will face heavy rainfall, locally intense rain, and even torrential downpours. The north-western part of the island will experience moderate to heavy rain. The maximum temperatures across most of Hainan Island will range from 27°C to 31°C, while the minimum temperatures will be between 23°C and 26°C.

It is anticipated that the cumulative rainfall from September 24th at 8:00 AM to September 27th at 8:00 AM will reach 150 to 250 millimetres in cities and counties such as Wenchang, Qionghai, Wanning, Lingshui, Ding’an, Tunchang, Qiongzhong, Baoting, Wuzhishan, and Sanya, with localised areas possibly exceeding 450 millimetres. In other cities and counties, rainfall totals will range from 50 to 150 millimetres.
More strong winds and heavy rainfall predicted
From September 30th to October 4th, due to the impact of a new tropical cyclone, Hainan Island is likely to encounter another period of strong winds and heavy rainfall.
Advice from the Hainan Provincial Meteorological Department
Around September 29th, a new tropical cyclone is likely to bring severe weather conditions to Hainan Island. Residents are encouraged to closely monitor the latest weather forecasts from the Hainan Provincial Meteorological Department and prepare accordingly.
Related article: Navigating Hainan Island’s Rainfall Risks: Understanding Mudslides and Flash Floods
