Tainan weather in August

August in Tainan: sweltering, soaked, with muggy air — not the time — 21 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Tainan🇹🇼 Taiwan · Taiwan & Okinawa · City39
  1. 85Jan
  2. 91Feb
  3. 82Mar
  4. 71Apr
  5. 52May
  6. 41Jun
  7. 45Jul
  8. 39Aug
  9. 55Sep
  10. 64Oct
  11. 76Nov
  12. 88Dec

#12 of 12 months in Tainan · #1301 of 1413 destinations to visit in August · comfort 39/100 (tier F)

Days
31°C
Nights
27°C
Wet days
21
Sun
8.9 h
Humidity
86%
Daylight
13 h
Tainan, Taiwan
Photo: Alan Wang · Pexels

Traveller notes on Tainan in August

Forum posters describe July and August as Taiwan's hottest months, typically 33-36C with high humidity, and afternoon thundershowers a regular feature of the June-August stretch. Posters are consistent that August sits within typhoon season (June-October), with August, July and September the three months most likely to see a storm make landfall - roughly three to four typhoons affect Taiwan in an average season, and a direct hit during a trip can cost travelers one to two disrupted days. Posters are equally clear that summer travel remains genuinely popular despite the heat, pointing to Taiwan's excellent air-conditioned MRT, malls and convenience stores, plus shaved ice and bubble tea on seemingly every corner, as real relief options. Posters generally rate August as hot, humid and typhoon-season for Tainan, entirely workable with flexible plans and frequent air-conditioned breaks.
Tripadvisor community · August · 1 month ago · Read more on Tripadvisor ↗

Other months in Tainan

Forum posters describe February in southern Taiwan as cool and pleasant, typically 15-20C, milder than the 10-15C posters report further north - winter here is generally mild outside the high mountains. It's not officially the rainy season, but posters note rain remains a real possibility on any given day, so a light jacket that also handles rain is standard packing advice. Cold fronts can occasionally push temperatures down to around 6C for a couple of days, a real but temporary dip rather than the norm. Posters describe February overall as the tail end of winter with spring clearly approaching, milder than most visitors expect coming from more northerly climates.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

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

Tainan climate normals — August

Daytime high31°C / 88°F🔥 sweltering
Nighttime low27°C / 81°F
Feels like (high)38°C / 100°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall401 mm / 15.8 in⛈ soaked
Rainy days21 days
Humidity86%💦 very humid
Dew point25°C / 76°F
Sunshine8.9 h/day
Daylight12.9 h
Wind13 km/h / 8 mph
Air quality (US AQI)70🙂 moderate

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

Crowds in Tainan in August

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.

BusySummer break in Taiwan, school holidays in 4 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Tainan'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).

Toughest weatherTainan's weather peaks December–February.

August coincides with Typhoon season.

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Best weatherFair weatherToughest weather

What's on in Tainan in August

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

  • Season

    Mango season

    1 Jun – 15 Aug · usuallyHarvest

    Yujing up the valley is the mango capital of Taiwan and the shaved-ice shops in the old city run on it for ten weeks. Irwin first, then the yellow ones later in the summer.

  • Hazard

    Typhoon season

    1 Jul – 15 Oct · usuallyClosures

    Fewer direct hits than the east coast, but the flooding is the problem here rather than the wind. A declared typhoon day closes everything, including the temples. Source ↗

  • Season

    Wet season

    MonsoonRisk

    21 rainy days and about 401 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in August →

Nearby, and something's on

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

Where is Tainan?

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Tainan in August — FAQ

Is August a good time to visit Tainan?
August in Tainan: sweltering, soaked, with muggy air — not the time — 21 rainy days. It ranks #12 of 12 months for Tainan on SeasonMap's comfort score (39/100).
What is the weather like in Tainan in August?
In August, Tainan averages a daily high of 31.2°C and a low of 27°C, with about 401.3 mm of rain over roughly 21.3 rainy days.
What is the air quality in Tainan in August?
Tainan has a mean US Air Quality Index of about 70 in August.

Within 300 km: Kenting's Calm sea season around 1 Apr – 30 Sep, and Taipei's Ghost Month around 5 Aug – 15 Sep.