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Tainan weather by month and the best time to visit

Updated October 2026Sources
Nov–MarBest time to visit

When to go to Tainan

Nov–Mar is dry, sunny and mild. Jun–Sep is hot, humid and typhoon-prone with afternoon storms; Chinese New Year draws temple crowds.

Tainan weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
15°20°25°30°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January21°C70°F18°C64°F39 mm77%Pleasant
February22°C72°F18°C65°F31 mm78%Pleasant
March24°C75°F20°C68°F48 mm77%Pleasant
April26°C79°F23°C73°F79 mm79%Pleasant
May28°C83°F25°C78°F223 mm82%Rainy
June29°C84°F27°C81°F344 mm85%Very wet
July30°C86°F28°C82°F289 mm83%Rainy
August29°C85°F28°C82°F441 mm84%Very wet
September29°C84°F27°C80°F242 mm83%Rainy
October27°C81°F25°C76°F72 mm80%Pleasant
November26°C78°F22°C72°F49 mm78%Pleasant
December23°C73°F19°C67°F33 mm76%Pleasant

Best months across Taiwan

PlaceBest monthsWarmest month
TaipeiMar–Apr, Oct–NovJul (30°C)
TainanNov–MarJul (30°C)
KaohsiungFeb–Mar, Nov–DecJul (30°C)
TaichungMar–Apr, Oct–NovJul (31°C)
HualienMar–May, Oct–NovJul (30°C)
JiufenMar–Apr, Oct–NovJul (28°C)
Sun Moon LakeMar–Apr, Oct–NovJul (29°C)
KentingMar–Apr, Oct–NovJul (29°C)
AlishanMar–Apr, Oct–DecJul (30°C)
TaitungApr–May, Oct–NovJul (32°C)
HsinchuApr, Oct–DecJul (32°C)
PenghuApr–Jun, SepJul (28°C)
XiaoliuqiuApr–Jun, Sep–OctMay (31°C)

Quick answers

What is the best month to visit Tainan?

Nov–Mar. Nov–Mar is dry, sunny and mild. Jun–Sep is hot, humid and typhoon-prone with afternoon storms; Chinese New Year draws temple crowds.

When is the rainy season in Tainan?

Rain peaks in August with about 441 mm. Months with 150 mm or more: May–Sep.

What is the hottest month in Tainan?

July, with average highs of 30°C (86°F).

How cold does Tainan get?

The coolest nights are in January, averaging 18°C (64°F).

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.