Halong Bay is worth visiting the whole year-round for its different beauty in every single season. There are four seasons in Ha Long: the wet and hot summer, the cool autumn, the cold and dry winter, and the warm spring. The average annual temperature of Halong is around 15°C to 25°C.
Warm Spring (March and April)
Temperatures during the spring season range from 19°C to 31°C. There is still the possibility of rainy and foggy conditions during the spring months, but the fog is not as thick as in the winter.
Spring is the time of flowers blooming and swallows flying over the bay. The bay becomes more inviting in April and remains attractive to tourists till the summer.
In the spring, the sun shines constantly all day, and the water is gentle and calm. With this weather, tourist can truly experience the best of Ha Long as they are cruising slowly around and staring at the breathtaking scenery.
Hot and Moist Summer (May to August)
In the summer, the average temperature is 34, 9°C; while the maximum temperature recorded is 38°C.
Summer brings clear views of the stunning islands and pleasant swimming temperatures, which is an ideal time for cruising. At this time, the sun shines from very early morning until as late as 7 p.m in Halong, which makes you feel the daytime is longer than the nighttime.
Summer also gives you a perfect chance to have sun- tanned skin. However, do not sunbathe at noon. Too much sun exposure can probably cause heat exhaustion, heatstroke, or sunburn.
If you travel to Ha Long Bay from July to August, there may be infrequent typhoons, which may render cancellation or delay of your trip. Most of the time, storms and typhoons are small, and they last in a very short time for about 2 or 3 days and thus considered to be harmless. In case of a big storm, be sure to contact your agent for alternative solutions.
Cool autumn (September and October)
Summer ends with the transformation of weather. The average temperature is lower than 27°C, so you can enjoy the cool and pleasant atmosphere.
From October onwards, it is the ideal time for tourists to take a cruise on the bay. The wonderful weather will enable you to enjoy all the activities offered on board while making sightseeing as perfect as it could be.
Autumn is also perfect for couples or small families to have private lifetime experiences together while sailing through Halong Bay.
Cold and Dry Winter (November to February)
Halong Bay enjoys a dry and cold winter. The winter officially arrives at Ha Long Bay in November and gets colder and colder in January and February. The highest temperature reaches to only 20°C, while the temperature can drop to about 8°C. It is possible to take a boat cruise in Ha Long Bay in winter. Although swimming is not suitable, there are a lot of exciting activities this season.
The essential overview of Halong weather will help you to choose the best time to visit the majestic World's New Wonder in Vietnam. Considering in all, you should update the weather forecast to enjoy your trip in Halong Bay to the fulfillment.