When is Hong Kong's Typhoon Season? How Many Typhoons Typically Occur Per Year?
TyphoonSays·防御问答 · Regional Typhoons · 更新 at 2026-10-19
Peak Typhoon Season: Focus on June to October, Beware of "Autumn Typhoons"
Although the Hong Kong Observatory designates May to October as the regular "watch period" for tropical cyclones, historical meteorological data indicates that June to October is the true high-risk window. Among these, July, August, and September represent the peak period with the most frequent typhoon formation and impacts. During this time, typhoon tracks often head directly toward the coastal areas of South China, resulting in significant destructive power.
It is worth noting that after entering autumn (September to November), influenced by the southward retreat of the subtropical high and the southward movement of cold air, typhoon paths become more complex and variable, often leading to "autumn typhoons." Although the frequency of these typhoons decreases slightly, they tend to interact with the northeast monsoon, causing more persistent heavy rainfall and strong winds. As for winter (December to April of the following year), suppressed by the strong northeast monsoon, tropical cyclones tend to form further east or take southerly paths, rarely affecting Hong Kong directly. Therefore, residents should remain vigilant during late summer and early autumn.
Frequency and Intensity: An Average of 5-6 Impacts per Year with Significant Interannual Variability
According to long-term statistics from the Hong Kong Observatory, an average of 5 to 6 tropical cyclones enter the 800-kilometer warning range of Hong Kong each year. Of these, approximately 2 to 3 are intense enough to require the hoisting of No. 8 or higher Gale Signal. However, this "average" is for reference only, as actual interannual differences are substantial. Some years are calm, while others (such as 2023) may see consecutive direct hits or close passes by multiple typhoons.
Regarding intensity classification, the China Meteorological Administration (CMA) categorizes tropical cyclones into six levels (from tropical depression to super typhoon), whereas Hong Kong employs a unique Wind Warning Signal System:
- Standby Signal No. 1: A tropical cyclone may be gathering nearby; stay alert.
- Strong Wind Signal No. 3: Strong winds are generally blowing near sea level, with gusts potentially exceeding 70 km/h.
- Gale or Storm Signal No. 8: Issued in four directions, indicating that the entire city enters a wind-resistance state, typically triggering school and work suspensions.
- Signals No. 9 and 10: Represent significantly strengthening winds and hurricane-force winds (sustained wind speeds reaching 118 km/h or above), respectively, which are highly destructive.
When Signal No. 8 or higher is in effect, the HKSAR Government will activate corresponding emergency arrangements. For specific details on school and work suspensions and adjustments to public services, please refer strictly to the latest announcements issued by the HKSAR Government and relevant departments; do not rely solely on past experience for judgment.
Disaster Preparedness: From Supply Stockpiling to Evacuation Actions
Proactive defense is key when facing unpredictable typhoons. It is recommended to check and reinforce windows and doors, clear flower pots from balconies, and clean drainage ditches before the typhoon season arrives to prevent falling objects and waterlogging. Households should maintain an emergency kit containing flashlights, spare batteries, power banks, at least three days' supply of drinking water and non-perishable food, common medications, and copies of important documents.
During typhoon impacts, closely monitor official updates from the Hong Kong Observatory. Once the No. 8 Typhoon Signal is hoisted, please stay indoors in safe areas away from windows and avoid going out or engaging in any water activities. If you are in low-lying areas, take advance precautions against seawater inundation caused by storm surges. Maintaining access to information and responding rationally is the best strategy to safeguard life and property.
Real-time typhoon tracks can be queried at TyphoonSays (taifengshuo.com)
This article is original educational content from TyphoonSays. Please refer to the latest official announcements from local governments for policy standards.