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May Weather in Tainan, China

Last updated: August 23, 2025

In May, the average temperature in Tainan, China hovers around 21°C (70°F). You might experience a minimum of 7°C (45°F) and, on warmer days, a maximum of 36°C (98°F). Be prepared for 123 mm (4.8 in) of precipitation spread over approximately 8 days, contributing to an average humidity level of 87%. Enjoy the diverse weather while exploring this vibrant destination!

May Temperature in Tainan

In May in Tainan, the average temperature is 21°C (70°F). The maximum can reach 36°C (98°F), while the minimum can drop as low as 7°C (45°F). This variation makes it advisable for travelers to pack layers to ensure comfort throughout the day.

May Weather in Tainan: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Tainan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tainan, May typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (98°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec394151597077828375645442
Data source: Temperature data for Tainan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Tainan

In Tainan in May, the precipitation amount is 123 mm (4.8 in) distributed over 8 days.

May Precipitation Trends in Tainan

The chart displays monthly precipitation patterns in Tainan, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Tainan, May typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec42394854123140254157104574138
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Tainan

In Tainan in May humidity is 87%. With an average temperature of 21°C (70°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities quite exhausting and requiring frequent breaks to hydrate and cool off.

May Average Humidity in Tainan

This chart illustrates the average monthly humidity levels in Tainan, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Tainan is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec67%69%79%86%87%90%95%92%79%76%77%73%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Tainan

In Tainan in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Tainan.

Maximum UV Index Levels in Tainan for May

The chart shows the monthly maximum UV Index (UVI) for Tainan in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Tainan typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101010111110754
Data source: Tainan May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Tainan Compares to Other Months

Weather in Tainan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Tainan, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Tainan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)42 mm (1.7 inches)67%moderate
February Weather5°C (42°F)39 mm (1.5 inches)69%high
March Weather11°C (51°F)48 mm (1.9 inches)79%very high
April Weather15°C (60°F)54 mm (2.1 inches)86%very high
May Weather21°C (70°F)123 mm (4.8 inches)87%very high
June Weather25°C (77°F)140 mm (5.5 inches)90%very high
July Weather28°C (82°F)254 mm (10.0 inches)95%extreme
August Weather28°C (83°F)157 mm (6.2 inches)92%extreme
September Weather24°C (75°F)104 mm (4.1 inches)79%very high
October Weather18°C (64°F)57 mm (2.2 inches)76%high
November Weather12°C (54°F)41 mm (1.6 inches)77%moderate
December Weather5°C (42°F)38 mm (1.5 inches)73%moderate

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