Ha long Bay Weather & Climate: Best Time to Visit

The climate in Ha long Bay is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in June to a pleasant 20°C (68°F) in the coolest month, January.

Nights vary from 28°C (82°F) in June to around 16°C (61°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ha long Bay has a notably wet climate with abundant precipitation, recording 2090 mm (82 in) of rainfall per year. The climate in Ha long Bay shows significant variation throughout the year. Expect heavy rainfall in August, the wettest month, with an average of 430 mm (17 in) of precipitation over 16 rainy days.

In contrast, the driest month February offers drier and sunnier days, with around 51 mm (2 in) of rainfall over 11 rainy days. For more details, please visit our Ha long Bay Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Ha long Bay serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 6.7 hours of sunshine daily, and embrace the darker days in March, offering only 1.6 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in March, reaching 88%. In November, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year