Will There Be Typhoons in April? What Are the Characteristics of April Typhoons?
TyphoonSays·防御问答 · The Typhoon Season · 更新 at 2026-07-26
Will There Really Be Typhoons in April?
The answer is yes, although the probability is relatively low. While the peak typhoon season is commonly perceived to be in summer and autumn (July to September), typhoons can actually form throughout the year. Meteorological records show that typhoons have indeed formed in the Northwest Pacific and the South China Sea in April, though their frequency is much lower than in mid-summer.
According to the national standard for tropical cyclone classification by the China Meteorological Administration (CMA), a system is classified as a typhoon when the maximum average wind speed near the center at the surface reaches a certain threshold (such as tropical storm intensity or higher). Typhoons occurring in April are often referred to as "early typhoons." As the sun's direct rays shift northward during this period, sea surface temperatures begin to rise, and atmospheric circulation adjusts, creating the basic conditions necessary for tropical cyclone development. Therefore, while April is not the "main battlefield" for typhoon defense, one should not let their guard down, especially in the coastal areas of South China, where vigilance remains essential.
What Are the Significant Characteristics of April Typhoons?
Compared to summer typhoons, those forming in April often exhibit several distinct features. Understanding these can help us assess risks more accurately:
- Generally Weaker Intensity: Since sea temperatures in spring have not yet reached their annual peak, atmospheric energy is relatively insufficient. Most April typhoons remain at the tropical storm or severe tropical storm level, with a low probability of developing into super typhoons.
- Complex and Unpredictable Paths: Spring marks a transition period between winter and summer atmospheric circulation patterns. The subtropical high is unstable, and steering currents are weak. This makes the paths of early typhoons difficult to predict, often resulting in stagnation, looping, or sudden changes in direction, posing significant challenges for forecasting.
- Rainfall Impact May Exceed Wind Impact: Although the winds may not be as fierce as those of summer typhoons, early typhoons tend to interact with warm, moist airflows from the south, bringing persistent heavy rainfall. For South China, which has already entered its flood season, this combined effect of wind and rain can easily trigger urban waterlogging or mountain floods and geological disasters.
How Should Residents Respond Scientifically?
In the face of potential early typhoons, the public should maintain a mindset of "routine preparedness." There is no need for panic, but the following preparations should be made:
- Monitor Official Warnings: Closely follow typhoon warning signals issued by local meteorological departments. Note that specific regulations regarding school suspensions and work stoppages may vary by location. Local standards may differ; please refer to announcements from your local government. For instance, some regions may recommend halting outdoor operations upon the issuance of a yellow warning, while others may have different response mechanisms.
- Check Home Safety: Clear flower pots and clutter from balconies in advance, and reinforce windows and doors to prevent objects from falling from heights. Check drainage pipes to ensure they are unobstructed, preventing rainwater backflow during heavy storms.
- Avoid Traveling Through Flooded Areas: Rainfall increases in April. If affected by the outer cloud bands of a typhoon, roads may be slippery and visibility poor. Avoid dangerous areas such as seaside and riverside locations. Do not attempt to wade through flooded sections of roads to prevent electric shock or falling into manholes with missing covers.
The key to disaster prevention lies in being "early." Even for low-probability events, it is crucial to make 100% preparation. Real-time typhoon tracks can be queried on 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.