Ha Long Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Ha Long, Quang Ninh, Vietnam. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.

Ha Long has a relatively rainy climate with high precipitation levels, averaging 1974 mm (78 in) of rainfall annually. Despite the high annual total, it does experience a distinct rainy season during certain months. Examine our detailed charts below to understand these seasonal patterns.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Ha Long shows significant variation throughout the year. Expect 407 mm (16 in) of precipitation during the wettest month August, distributed over 16 rainy days.

In contrast, February offers drier and sunnier days, with around 41 mm (1.6 in) of rainfall over 11 rainy days.

August, the wettest month, has a maximum daytime temperature of 32°C (90°F). The city receives 175 hours of sunshine in this period. During the driest month February you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our Ha Long Temperature page.

Ha Long's average annual precipitation is 1974 mm (78 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Ha Long's weather, including sunshine hours, humidity levels, and temperature data, visit our Ha Long Climate page.