Kaohsiung weather in September

September in Kaohsiung: sweltering, soaked, with muggy air — a gamble, with 14 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Kaohsiung🇹🇼 Taiwan · Taiwan & Okinawa · City52
  1. 87Jan
  2. 90Feb
  3. 80Mar
  4. 69Apr
  5. 50May
  6. 40Jun
  7. 43Jul
  8. 37Aug
  9. 52Sep
  10. 60Oct
  11. 72Nov
  12. 84Dec

#8 of 12 months in Kaohsiung · #1245 of 1413 destinations to visit in September · comfort 52/100 (tier D)

Days
33°C
Nights
27°C
Wet days
14
Sun
9.8 h
Humidity
82%
Daylight
12 h
Kaohsiung, Taiwan
Photo: Sunny Li · Pexels

Traveller notes on Kaohsiung in September

Notes from nearby Kenting (89 km away)

Kaohsiung doesn't have its own notes for September yet — these are about Kenting, close enough to share the season.

Kenting forum threads describe September as a genuinely good window to visit - noticeably less scorching than peak summer, with students back in school thinning out the crowds, and good surf conditions drawing regulars specifically for that reason. September does fall within Taiwan's June-October typhoon season, with August/July/September the months most likely to see one, but posters were clear that being 'typhoon season' doesn't mean a typhoon will actually hit - it's common to go a stretch without one even in peak months. The practical advice: check forecasts as the trip nears rather than avoiding the month outright, and know that Kenting's beaches don't officially close even when conditions turn rough.
HengchunPeninsulaRegular · September · 1 month ago · about Kenting · Read more on Tripadvisor ↗

Other months in Kaohsiung

Forum posters describe August in Kaohsiung as basically a daily heatwave, with one local citing temperatures around 30-38C, and posters generally naming July and August as Taiwan's hottest months overall, typically 33-36C with high humidity. Posters consistently flag August through October as typhoon season, a real factor to track for any Kaohsiung trip this time of year. Posters describe rain as occurring periodically rather than daily, though June through August sees the heaviest rainfall totals of the year. Posters are direct that August isn't the ideal weather month, but note millions of visitors still come to Taiwan every summer regardless. Posters generally rate August as hot, humid and typhoon-watchful, but still genuinely travel-friendly for Kaohsiung.
Tripadvisor community · August · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Kaohsiung in February as warm and dry enough that jackets weren't needed day or night on at least one recent visit, consistent with the broader pattern posters give for southern Taiwan generally - mild winters, typically 15-20C, not the rainy season though a stray shower is always possible. The one scheduling wrinkle worth planning around: Chinese New Year (early-to-mid February) brings sold-out public transport and higher accommodation rates, but posters call it worth the hassle for the festive atmosphere, which they say isn't matched at any other time of year.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Kaohsiung's card on the map.

Kaohsiung climate normals — September

Daytime high33°C / 91°F🔥 sweltering
Nighttime low27°C / 80°F
Feels like (high)38°C / 100°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall210 mm / 8.3 in⛈ soaked
Rainy days14 days
Humidity82%💦 very humid
Dew point24°C / 76°F
Sunshine9.8 h/day
Daylight12.3 h
Wind13 km/h / 8 mph
Air quality (US AQI)88🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Kaohsiung in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyGhost Month, school holidays in 3 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Kaohsiung's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherKaohsiung's weather peaks December–February.

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Best weatherFair weatherToughest weather

What's on in Kaohsiung in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Typhoon season

    1 Jul – 15 Oct · usuallyClosures

    Southern Taiwan is hit less often than the east coast but harder by the rain when it is. A typhoon day here means a declared day off work and the whole city indoors. Source ↗

  • Holiday

    Ghost Month

    5 Aug – 15 Sep · usuallyReligious feast

    The seventh lunar month, when offerings burn on the pavements and locals put off weddings, house moves and swimming. Nothing shuts, but the beaches at Cijin are noticeably emptier. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Kaohsiung — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Kaohsiung?

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Kaohsiung in September — FAQ

Is September a good time to visit Kaohsiung?
September in Kaohsiung: sweltering, soaked, with muggy air — a gamble, with 14 rainy days. It ranks #8 of 12 months for Kaohsiung on SeasonMap's comfort score (52/100).
What is the weather like in Kaohsiung in September?
In September, Kaohsiung averages a daily high of 32.7°C and a low of 26.6°C, with about 209.6 mm of rain over roughly 13.9 rainy days.
What is the air quality in Kaohsiung in September?
Kaohsiung has a mean US Air Quality Index of about 88 in September.

Within 300 km: Kenting's Raptor migration around 25 Sep – 25 Oct, and Sun Moon Lake's Cross-lake Swimming Carnival around 10 Sep – 5 Oct.