Tainan weather in August
In August, Tainan has an average high of 29 °C85 °F and an average low of 28 °C82 °F, with about 441 mm17 in of precipitation. It is the 2nd warmest month of the year and the wettest.
How August compares with other months
Compared with July, August is about the same temperature and wetter by 152 mm6.0 in. Compared with September, August is 0.7 °C1.2 °F warmer on average and wetter by 199 mm7.8 in. Daylight lasts about 12.9 hours around the middle of the month. Average relative humidity is 84% and the average cloud amount 70%.
Is August a good time to visit Tainan?
August is not among the most comfortable months by our comfort score: it is hot (average high 29 °C85 °F), it is fairly wet (441 mm17 in) and it is humid (84%). The most comfortable months in Tainan are October–April.
What to wear in August
For Tainan in August, pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
August in nearby places
Other months in Tainan
- January21 °C70 °F / 18 °C64 °F
- February22 °C72 °F / 18 °C65 °F
- March24 °C75 °F / 20 °C68 °F
- April26 °C79 °F / 23 °C73 °F
- May28 °C83 °F / 25 °C78 °F
- June29 °C84 °F / 27 °C81 °F
- July30 °C86 °F / 28 °C82 °F
- August29 °C85 °F / 28 °C82 °F
- September29 °C84 °F / 27 °C80 °F
- October27 °C81 °F / 25 °C76 °F
- November26 °C78 °F / 23 °C73 °F
- December23 °C73 °F / 19 °C67 °F
Frequently asked questions
How warm is Tainan in August?
In August the average high in Tainan is 29 °C (85 °F) and the average low is 28 °C (82 °F).
Does it rain a lot in Tainan in August?
On average about 441 mm (17.4 in) of precipitation falls in August; it ranks 1st of the 12 months.
Is August the warmest month in Tainan?
No. The warmest month in Tainan is July, with an average high of 30 °C (86 °F). The coldest month is January, with an average low of 18 °C (64 °F).
How long is the day in Tainan in August?
In the middle of August the day in Tainan lasts about 12.9 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Tainan in August?
The average relative humidity in August is about 84%. Combined with warm days, it can feel muggy.
How cloudy is Tainan in August?
On average about 70% of the sky is covered by cloud in August. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.