When is Typhoon Season? Which Month Has the Most Typhoons?
TyphoonSays·防御问答 · Typhoon knowledge · 更新 at 2026-07-18
Typhoon Active Period: A Long Summer and Autumn Season
For China's coastal and inland regions, typhoons are not confined to a single month but represent a seasonal phenomenon with a long duration. According to historical data from the China Meteorological Administration (CMA), tropical cyclones can form in the Northwest Pacific and the South China Sea year-round. However, typhoons affecting China are mainly concentrated from May to October, a six-month period commonly referred to as "typhoon season."
Among these, July, August, and September are the most frequent periods for typhoons making landfall or impacting China. Although the number of typhoons in May and June is relatively low, some "early typhoons" may exhibit erratic paths or rapid intensity changes, warranting caution. By October and even November, while the frequency decreases, "autumn typhoons" remain active. These typhoons often interact with cold air masses, resulting in significant rainfall intensity and destructive power that should not be underestimated. Therefore, from early summer to late autumn, we should maintain awareness of typhoon developments.
Peak Month: Why is August the Busiest?
If asked which month has the most typhoons, the answer is typically August. Based on multi-year average data, August sees the highest sea surface temperatures in the Northwest Pacific and atmospheric conditions most favorable for the generation and development of tropical cyclones. During this time, the subtropical high is positioned further north, providing stable steering flows that make it easier for typhoons to move westward or northwestward, thereby affecting China's southeastern coastal areas.
July and September follow closely behind. July marks the beginning of the active typhoon period, while September represents the transition from summer to autumn. Although the number of generated typhoons is slightly lower than in August, the area of impact may be wider. It is important to note that "most" refers to the statistical peak in generation and impact frequency; it does not mean other months are absolutely safe. Every numbered typhoon carries potential disaster risks, so vigilance should not be relaxed during non-peak months.
Scientific Defense: Monitor Warnings and Local Policies
When facing typhoons, scientific preparedness is more useful than mere worry. China adopts the National Standard for Tropical Cyclone Grades (GB/T 19201-2006), classifying tropical cyclones into six levels: tropical depression, tropical storm, severe tropical storm, typhoon, severe typhoon, and super typhoon. When receiving meteorological information, the public should focus on typhoon warning signals issued by local meteorological observatories, which are typically divided into four levels: blue, yellow, orange, and red, with red being the highest level.
As warning signals escalate, various regions will activate corresponding emergency response mechanisms, including measures such as school suspensions, work stoppages, and transport halts. Please note that standards may vary by location; please refer to announcements from local governments. For example, some cities mandate school closures for primary and secondary schools upon the issuance of a yellow typhoon warning, while other regions may require an orange or red warning. Residents are advised to familiarize themselves with their city's emergency management regulations in advance and stock up on necessary food, drinking water, and emergency lighting tools. Before a typhoon arrives, clearing clutter from balconies, reinforcing windows and doors, and avoiding staying under billboards or large trees are basic actions to protect personal safety.
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.