What is bad weather that might occur in Halong Bay

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Halong in storm
Halong in storm

Reasons for cruise cancellation are usually known as: tropical storm, typhoon, thick fog, tropical monsoon, cyclone, and thunderstorm…

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1. Tropical storm and typhoon (July – September)

Summer is the time when tropical storms break out in the area and bring heavy rainfall. The period from May to July is considered as storm weather in Halong Bay with many unpredictable weather conditions. Hence, cruises will be cancelled with short notice. In the end of summer and early autumn, there are heavy rains and powerful tropical storms with strong affection. September is often when the major storms in the south pacific tend to drift across towards Vietnam, sometimes leading to considerable damage. The chances of your cruise being disrupted by a storm is still extremely low, but it higher in September than in previous months.

Halong Bay in the winter
Halong Bay in the winter

2. Foggy weather (January and February)

In the winter, from December to the end of February, the weather is cold with strong wind. There are times of heavy fog with low visibility in December, January and February. In extremely foggy conditions that human vision is limited in short distance, the tour will be cancelled.

Early morning foggy on Halong
Early morning foggy on Halong

3. Monsoon (October to late March or early April)

Northeast monsoon in winter is now one of 3 most frequent reasons to force tour cancelled in Halong Bay, it is even more difficult to prepare for it in advance, sometime cause many disappointments. The northeast monsoon can also affect tropical cyclones over the sea and Halong Bay in particular. As the result, the wind and sea level is not safe for cruise during this time. Unlike cancellation tour by storms, monsoon causes tour cancellation in short time (a day or two days) then tour is fine to operate in next days.