Ha Long Weather & Climate: Best Time to Visit

Visitors to Ha Long can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 32°C (90°F) in June, the warmest time of the year, to a pleasant 20°C (68°F) during cooler months like January.

At night, you can expect temperatures ranging from 27°C (81°F) in June to around 15°C (59°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ha Long is known for its substantial rainfall, with annual precipitation reaching 1974 mm (78 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, August it receives heavy rainfall, averaging 407 mm (16 in) of precipitation, recorded across 16 rainy days. In contrast, the driest month February brings less rainfall, with 41 mm (1.6 in) over 11 rainy days. For more details, please visit our Ha Long Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Ha Long. While July receives considerable daily sunshine with up to 6.7 hours, March marks the darkest time of the year, where sunshine is scarce with only 1.6 hours of sunlight per day.

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