Haikou Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Haikou. The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.

Haikou is known for its substantial rainfall, with annual precipitation reaching 1411 mm.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wet season, September receives substantial rainfall, averaging 238 mm of precipitation, recorded across 17 rainy days.

In contrast, the drier season, January brings less rainfall, with 40 mm over 12 rainy days.

September, the city’s wettest month, has a maximum daytime temperature of 31°C. During the driest month January you can expect a temperature of 21°C. For more detailed insights into the city’s temperatures, visit our Haikou Temperature page.

Annual Precipitation in China

The map below shows the annual precipitation across China. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Haikou’s average annual precipitation is 1411 mm. Let’s compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm, with rain and snow contributing to its humid climate.

In Shanghai, China, the annual average precipitation is 1347 mm, with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.

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

How is Precipitation Measured?

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.

Global Warming and Precipitation

Climate change is affecting precipitation patterns worldwide, including Haikou:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

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