Visit Sapa in Vietnam
Balancing on the edges of a rice field with endless views. A trek through the valley of Sapa is definitely a must for the bucket list.
This page shows both the average monthly rainfall and the number of rainy days in An Hải, Vietnam. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's explore the details to provide you with a complete overview.
An Hải has a notably wet climate with abundant precipitation, recording 2536 mm (100 in) of rainfall per year. It does, however, have a distinct rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.
The seasons in An Hải, bring significant changes in precipitation. The wettest month, November, receives heavy rainfall, with an average of 465 mm (18 in) of precipitation. This rainfall is distributed across 7 rainy days.
In contrast, the driest month, April, experiences much less rainfall, totaling 84 mm (3.3 in) over 8 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.November, the wettest month, has a maximum daytime temperature of 27°C (81°F). The city receives 120 hours of sunshine in this period. During the driest month April you can expect a temperature of 30°C (86°F). For more detailed insights into the city's temperatures, visit our An Hải Temperature page.
Average daily rainfall for each day of the month based on long-term records. 50-year average (1976-2025)
Browse day-by-day precipitation records for An Hải spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
The map below shows the annual precipitation across Vietnam. You can also select the different months in case you are interested in a specific month.
An Hải's average annual precipitation is 2536 mm (100 in). Let's compare this to some popular worldwide tourist destinations:
The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
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.
Precipitation has a very strong role in determining the local climate and ecosystem:
For more detailed information about An Hải's weather, including sunshine hours, humidity levels, and temperature data, visit our An Hải Climate page.
Pick a month to see the average temperature, rainfall and sunshine in An Hải - and find the best time to visit.
Temperature Rainfall Sunshine Humidity
See the full An Hải climate overview or explore weather in Vietnam.
Where to go in October - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Visit Sapa in Vietnam
Balancing on the edges of a rice field with endless views. A trek through the valley of Sapa is definitely a must for the bucket list.
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