Xiamen weather in September

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

Updated September 2026 · climate normals from ERA5 reanalysis

Xiamen🇨🇳 China · Southern China & Hong Kong · City57
  1. 81Jan
  2. 79Feb
  3. 83Mar
  4. 74Apr
  5. 60May
  6. 47Jun
  7. 49Jul
  8. 44Aug
  9. 57Sep
  10. 73Oct
  11. 85Nov
  12. 89Dec

#9 of 12 months in Xiamen · #1190 of 1413 destinations to visit in September · comfort 57/100 (tier D)

Days
33°C
Nights
25°C
Wet days
14
Sun
9.7 h
Humidity
80%
Daylight
12 h
Xiamen, China
Photo: toter yau · Pexels

Traveller notes on Xiamen in September

Other months in Xiamen

Forum posters describe rain building through May along China's southeast coast, including Xiamen, with conditions worsening further into June when thunderstorms become common. Posters consistently recommend the second week of May specifically, avoiding both the May 1st national holiday crowds and, ideally, some of the month's rain, while acknowledging there's no guarantee of dry weather even then. Posters note April can also bring real rain, so May isn't necessarily worse than the month before it. Posters generally recommend staying around Zhongshan Road in Xiamen's old town for the most authentic local food and atmosphere regardless of exact travel dates. Posters generally rate May as a workable but increasingly wet month to visit Xiamen, with the first half of the month a better bet than the back half.
Tripadvisor community · May · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Xiamen's weather as genuinely pleasant even heading into the cooler months, with one comparison likening its winter conditions to a Tampa, Florida winter - well above freezing, generally comfortable, and with notably good air quality for a Chinese coastal city. Occasional cold fronts can push temperatures down by 5C or more for a few days at a stretch before things return to the milder baseline, so posters recommend packing a layer for those cooler snaps even though the overall month reads as mild. As a subtropical coastal city, Xiamen is repeatedly named among the more livable, walkable options on China's southern coast for travelers looking to avoid the harsher winters further north or inland.
Tripadvisor community · November · 1 month ago · Read more on Tripadvisor ↗

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

Xiamen climate normals — September

Daytime high33°C / 91°F🔥 sweltering
Nighttime low25°C / 76°F
Feels like (high)38°C / 100°F
Sea temperature29°C / 84°F♨️ bath-warm
Rainfall152 mm / 6 in⛈ soaked
Rainy days14 days
Humidity80%💦 very humid
Dew point23°C / 73°F
Sunshine9.7 h/day
Daylight12.3 h
Wind15 km/h / 9 mph
Air quality (US AQI)67🙂 moderate

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

Crowds in Xiamen 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.

Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Xiamen'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 weatherXiamen's best weather comes in March, November and December — separate windows, not one continuous season.

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Best weatherFair weatherToughest weather

What's on in Xiamen in September

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

  • Rule

    Gulangyu is capped and pre-booked

    1 Jan – 31 DecBook earlyClosures

    The island runs on a daily visitor limit and timed ferry tickets bought online, and visitors sail from the cruise terminal rather than the pier opposite it. Buy before you arrive in the city. Source ↗

  • Hazard

    Typhoon season

    1 Jul – 30 Sep · usuallyClosures

    This coast takes direct hits, not glancing ones, and the city has been shut for days by them. Ferries stop first, then flights, then everything with a shopfront. Source ↗

What's on around the world in September →

Nearby, and something's on

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

Where is Xiamen?

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Xiamen in September — FAQ

Is September a good time to visit Xiamen?
September in Xiamen: sweltering, soaked, with muggy air — a gamble, with 14 rainy days. It ranks #9 of 12 months for Xiamen on SeasonMap's comfort score (57/100).
What is the weather like in Xiamen in September?
In September, Xiamen averages a daily high of 32.5°C and a low of 24.5°C, with about 152.4 mm of rain over roughly 13.7 rainy days.
What is the air quality in Xiamen in September?
Xiamen has a mean US Air Quality Index of about 67 in September.

Within 300 km: Sun Moon Lake's Cross-lake Swimming Carnival around 10 Sep – 5 Oct.