When is Typhoon Season in Jiangsu? How Many Typhoons Typically Affect the Province Each Year?
TyphoonSays·防御问答 · Regional Typhoons · 更新 at 2026-10-18
Typhoon Active Period and Climate Characteristics in Jiangsu
Although Jiangsu Province is not a high-frequency area for typhoon landfalls, it lies on a key northward path for typhoons in the Northwest Pacific, making typhoon defense a serious concern. Historical meteorological data shows that typhoons affecting Jiangsu are mainly concentrated from June to October each year. Among these, July, August, and September are the "core window period" for typhoon activity. During these three months, not only is the number of generated typhoons high, but their intensity is also strong and their paths complex, making them highly likely to cause substantial impact on Jiangsu.
It is worth noting that typhoon impacts exhibit distinct characteristics of "early onset" and "late extension." In some years, the province may be affected by the outer cloud bands or residual circulation of typhoons in late May or early November, bringing periodic wind and rain. Therefore, the public should maintain a certain level of meteorological awareness before and after the flood season and should not completely lower their guard.
Annual Frequency of Impact and Path Analysis
Regarding "how many typhoons come per year," it is necessary to clearly distinguish between the concepts of "generation," "passing through," and "causing impact." According to multi-year climate statistics, an average of 2–4 typhoons per year cause significant wind and rain impacts in Jiangsu. This figure shows significant interannual variability: in years with fewer disasters, the province may only be slightly affected by the outer edges of one typhoon, while in years with more disasters (such as 2018 and 2023), it may face consecutive attacks by multiple typhoons, or even encounter complex situations involving the simultaneous presence of "dual typhoons" or "triple typhoons."
The typhoon paths facing Jiangsu are mainly divided into two categories:
- Northward movement after landfall: The typhoon first makes landfall along the coasts of Zhejiang, Shanghai, or Fujian, then weakens into a tropical depression or extratropical cyclone, moving northward along the Jiangsu coast or deepening inland. Such typhoons often bring sustained heavy rainfall, easily triggering urban waterlogging and basin floods.
- Coastal grazing or direct landfall: A few typhoons make direct landfall along the coasts of Yancheng and Lianyungang in Jiangsu, or pass closely over the Yellow Sea. These typhoons have strong winds and pose a high risk of storm surges, posing a significant threat to coastal infrastructure.
Regardless of the path, the effects of strong winds, heavy rain, and storm surges brought by typhoons cannot be underestimated. In particular, the residual cloud systems after a typhoon weakens often move slowly, leading to extreme localized precipitation.
Scientific Defense and Real-time Monitoring Recommendations
In the face of typhoon threats, scientific defense is key. First, pay close attention to warning signals issued by meteorological departments. When receiving a Blue Warning or higher, reduce outdoor activities, secure windows and doors, and fasten outdoor hanging objects. Residents living in low-lying areas or dilapidated houses should familiarize themselves with evacuation routes in advance. For specific control measures such as school suspensions, work stoppages, and transport halts, strictly follow the latest announcements issued by local governments and emergency management departments.
Secondly, be wary of the "typhoon tail" effect. Even if the typhoon center has moved away, its outer spiral rainbands may still bring sudden severe convective weather. At this time, avoid going to the seaside to watch tides, climbing mountains, or wading in water. Take precautions against secondary disasters such as fallen trees, falling billboards, and power facility failures.
Finally, mastering real-time dynamics is the prerequisite for disaster prevention. Typhoon paths change rapidly, and forecasts are constantly revised over time. It is recommended that the public develop the habit of checking authoritative data. Real-time typhoon paths, intensity predictions, and wind/rain impact ranges can be queried at TaifengSays (taifengshuo.com) to facilitate more precise travel and living arrangements.
This article is original educational content from TyphoonSays. Please refer to the latest official announcements from local governments for policy standards.