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

This page shows both the average monthly rainfall and the number of rainy days in Tainan, Taiwan. This average is based on long-term data collected between 1990 and 2020. Let's now guide you through the details for a complete overview.

Tainan has a notably wet climate with abundant precipitation, recording 2374 mm of rainfall per year.

Monthly Precipitation Levels

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

Tainan can be quite wet during August, receiving approximately 468 mm of precipitation over 17 rainy days.

In contrast November, experiences much drier conditions, with 54 mm of rainfall, spread across 14 rainy days.

August, the wettest month, has a maximum daytime temperature of 32°C. The city receives 189 hours of sunshine in this period. During the driest month November you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Tainan Temperature page.

Annual Precipitation in Taiwan

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

Amsterdam Precipitation Compared World Wide

Tainan’s average annual precipitation is 2374 mm. Let’s compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm of rainfall mostly during the winter months.

In Seoul, South Korea, the average annual precipitation is 1237 mm, with most rain falling during the summer monsoon season.

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 Precipitation Patterns

Tropical Rainforests: In tropical regions, rainfall is generally abundant year-round. Areas near the equator, like the Amazon rainforest, can receive up to 3000 mm of rain annually.

Desert Regions: Deserts such as the Sahara and Arabian deserts typically see less than 250 mm of rainfall annually. Rainfall tends to be infrequent, but when it does occur, it is often intense.

Temperate Zones: In temperate regions, precipitation tends to be more evenly distributed, though areas closer to the ocean may see more rain in the winter months, and areas further inland experience drier summers.

Polar Regions: Precipitation in polar regions, like Antarctica, is extremely low, often falling as snow. Average annual precipitation in Antarctica is less than 200 mm, with some areas receiving as little as 50 mm annually.

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