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

This page shows the average amount of rainfall per month in Tainan. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Tainan experiences significant rainfall throughout the year, averaging 2374 mm of precipitation annually.

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, August receives substantial rainfall, averaging 468 mm of precipitation, recorded across 17 rainy days.

In contrast, the drier season, November brings less rainfall, with 54 mm over 14 rainy days.

August, the city’s wettest month, has a maximum daytime temperature of 32°C and receives 189 hours of sunshine. 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:

Athens, Greece, receives an average annual precipitation of 400 mm, making it one of the drier Mediterranean climates with rainfall mostly in winter.

Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.

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

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.

Sea vs. Land Precipitation

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

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