When is Hainan's Typhoon Season? How Many Typhoons Typically Occur Per Year?
TyphoonSays·防御问答 · District of Typhoon · 更新 at 2026-07-22
Duration of Hainan's Typhoon Season
Hainan Island, located at the southernmost tip of China and surrounded by sea, is one of the provinces most frequently affected by tropical cyclones. Generally, Hainan's typhoon season is concentrated from May to November, but this is not an absolutely fixed period. According to meteorological statistics, tropical disturbances can form and affect Hainan as early as April, and the season may even extend into December.
Among these months, July, August, and September represent the "peak period" for typhoon activity. During these three months, the number of generated typhoons is highest, their intensity is often stronger, and the resulting wind and rain impacts are most significant. For Hainan residents, it is advisable to start monitoring typhoon updates issued by meteorological departments after May and prepare mentally and materially. Although typhoon frequency decreases after November, one should not let their guard down completely, as autumn typhoons often have complex tracks and can combine with cold air masses to produce heavier precipitation.
Average Annual Number of Typhoons
Regarding the question "how many typhoons typically occur per year," it is important to distinguish between "formation," "passing through," and "landfall." According to historical data from the CMA (China Meteorological Administration), an average of about 25 tropical cyclones form annually in the Northwest Pacific and the South China Sea, but not all of them affect Hainan.
Specifically for Hainan Island, an average of 6 to 9 tropical cyclones enter its warning zone each year (meaning they cause some wind and rain impact on Hainan). Among these, the average number of typhoons that actually make landfall on Hainan Island is approximately 3 to 4 per year. It is important to note that this figure is a multi-year average; specific years may deviate significantly. Some years may see no typhoon landfalls, a phenomenon known as an "empty typhoon season," while other years may experience multiple typhoons affecting the region in succession, or even simultaneous "dual-typhoon" or "multi-typhoon" scenarios. Therefore, one cannot simply predict this year's activity based on last year's conditions, as annual typhoon activity carries unique uncertainties.
Key Defense Measures and Warning Responses
When facing typhoons, scientific preparedness is more important than mere worry. When meteorological departments issue typhoon warning signals, the public should closely monitor emergency response measures issued by local governments. China's typhoon warning signals are divided into four levels: Blue, Yellow, Orange, and Red, with higher levels indicating greater hazard.
- Blue and Yellow Warnings: These usually indicate that a typhoon is about to affect or is already affecting the area, with winds gradually strengthening. At this stage, check windows and doors, secure loose outdoor items, and avoid going to the seaside.
- Orange and Red Warnings: These represent powerful typhoons that may cause severe disasters. At these levels, localities typically initiate emergency measures such as suspending classes, work, and business operations. Please note that standards may vary by location; always refer to announcements from your local government. For example, some regions mandate school closures upon the issuance of a Yellow warning, while others require an Orange or Red warning.
During a typhoon, do not go out unnecessarily. Stay away from billboards, large trees, and temporary structures. If you are in a low-lying area or a dilapidated house, evacuate to a safe area in advance. Stockpile an adequate supply of drinking water, food, and emergency medications, and ensure your mobile phone is fully charged to receive the latest meteorological information promptly.
Real-time typhoon tracks can be queried at TyphoonSays (taifengshuo.com)
This article is typhoonsay's original copy content, and the local policy standards are based on the local government's latest release.