Will There Be Typhoons in May? What Are the Characteristics of May Typhoons?
TyphoonSays·防御问答 · The Typhoon Season · 更新 at 2026-07-26
Will There Really Be Typhoons in May?
The answer is yes. Although typhoons are commonly associated with the summer and autumn seasons (July to September), they can actually form year-round, and typhoons in May are not rare. Meteorological statistics show that the Northwest Pacific and the South China Sea already possess the thermal and dynamic conditions necessary for tropical cyclone formation in May. At this time, the subtropical high gradually shifts northward, and sea surface temperatures rise, creating favorable conditions for the development of tropical disturbances. However, compared to mid-summer, the number of typhoons forming in May is typically lower, and their paths and intensities often exhibit greater uncertainty. Therefore, one should not let their guard down simply because it is late spring or early summer; paying close attention to the latest forecasts issued by meteorological authorities is crucial.
Main Characteristics of May Typhoons
Compared to typhoons during the peak summer season, those forming in May usually exhibit the following significant characteristics:
- Relatively weaker intensity, but high variability: Since the atmospheric environment is not yet stable and vertical wind shear may be strong, rapid intensification of typhoons is often hindered. Most May typhoons remain at the level of tropical storms or severe tropical storms, with a low probability of reaching super typhoon status. However, this does not mean there is no risk; even weak typhoons can bring heavy rainfall.
- Complex and unpredictable paths: May is a period of adjustment in atmospheric circulation, and steering flows are less stable than in summer. This leads to situations where typhoon paths may suddenly turn, stall, or loop, making forecasting relatively more difficult.
- "Early typhoons" easily interact with cold air: This is the most critical characteristic of May typhoons to watch out for. If a typhoon moves north and encounters cold air moving south, even if the typhoon itself has weak winds, the interaction can trigger intense convective weather, leading to persistent heavy rainfall in affected areas and potentially causing floods and waterlogging.
Key Defense Focus and Response Recommendations
When facing potential typhoons in May, residents should focus on the impacts of wind and rain rather than just the wind force level. According to the Chinese national standard "Tropical Cyclone Grades" issued by the CMA (China Meteorological Administration), systems with maximum sustained winds near the center reaching Force 6 or above are defined as tropical depressions or higher, warranting attention.
Regarding defensive measures, please note the following points:
- Guard against heavy rain and urban waterlogging: Rainfall efficiency from May typhoons can be very high. Residents in low-lying areas should clear drainage outlets in advance and prepare flood control materials such as sandbags.
- Monitor warning signals: Closely follow the blue, yellow, orange, or red typhoon warning signals issued by local meteorological departments. It is important to note that specific regulations regarding school suspensions and work stoppages may vary by location; always refer to announcements from local governments. Do not rely solely on personal experience to decide whether to go out.
- Avoid seaside activities: Even if a typhoon is far away, its outer cloud bands can generate long waves and storm surges. Visiting the seaside for recreation or work in May poses safety hazards and should be avoided as much as possible.
The key to disaster prevention is "prepare early, take no chances." Regardless of the typhoon's strength, obtaining authoritative information in a timely manner and taking proper home precautions is always the safest choice. 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.