Tainan weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Tainan in September. Check more long-term weather averages for Tainan in September before you book your next holiday to Taiwan in 2025/2026.

  • 90°F maximum daytime temperature in September in Tainan90
    90°F max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in September in Tainan14
    14 days with some rainfall
  • 73°F minimum night-time temperature in September in Tainan73
    73°F min night temperature
  • 12 hours of daylight per day in September in Tainan12
    12 hours of daylight per day
  • Very high heat & humidity in September in TainanVH
    Very High heat & humidity
  • 6.5 inches monthly rainfall in September in Tainan6.5
    6.5 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Tainan11
    11 (Extreme) UV index
  • 82°F sea temperature in September in Tainan82
    82°F sea temperature

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The September weather guide for Taiwan (Tainan) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Tainan in September?

Daytime temperatures usually reach 90°F in Tainan in September with very high heat and humidity, falling to 73°F at night.

How sunny is it in Tainan in September?

There are normally 6 hours of bright sunshine each day in Tainan in September - that's 52% of daylight hours.

How warm is the sea around Tainan in September?

The average sea temperature around Tainan in September is 82°F.

Does it rain in Tainan in September?

There are usually 14 days with some rain in Tainan in September and the average monthly rainfall is 6.5 inches.

What is the chance of a typhoon in Tainan in September?

On average 3.1 days in September in Tainan are likely to be affected by the passage of one or more tropical storms.

Tainan September sunrise & sunset times

Browse the sunrise and sunset times for Tainan in September 2025. Select a month to view Tainan sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:41 18:17
Monday, 15th September 2025 05:46 18:03
Tuesday, 30th September 2025 05:50 17:48

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