Facts checked against live data · 25 Aug 2026

Hong Kong · September

Hong Kong in September: Weather, Crowds & What's On

What September is actually like in Hong Kong — average highs and lows, how much rain to expect, public holidays that fill trains and hotels, and verified places to go.

Weather in September

Average high29°C
Average low25°C
Rainfall303mm

The 2nd warmest month of Hong Kong's year. The 3rd wettest month, at 13% of the year's rain.

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When to Visit Hong Kong: Month by Month →

Public holidays in September

Domestic travel peaks around these dates — book earlier and expect busier sights.

  • September 26 中秋節翌日 · Day following the Mid-Autumn Festival

Climate figures are 10-year averages for Hong Kong, from Open-Meteo; holidays from public calendars. Updated monthly.

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