Macau Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Macau, Macao. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Macau experiences significant rainfall throughout the year, averaging 1818 mm (72 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct dry and rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.

Monthly Precipitation Levels

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

The climate in Macau shows significant variation throughout the year. Expect 330 mm (13 in) of precipitation during the wettest month August, distributed over 18 rainy days.

In contrast, December offers drier and sunnier days, with around 36 mm (1.4 in) of rainfall over 5 rainy days.

August, the wettest month, has a maximum daytime temperature of 32°C (90°F). The city receives 198 hours of sunshine in this period. During the driest month December you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our Macau Temperature page.

Macau's average annual precipitation is 1818 mm (72 in). Let's compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.

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.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

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