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Hong Kong weather in September 2025
Expect 86°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Hong Kong in September. Check more long-term weather averages for Hong Kong in September before you book your next holiday to Hong Kong in 2025/2026.
- 86°F max day temperature
86 - 6 hours of sunshine per day
- 14 days with some rainfall
14 - 77°F min night temperature
77 - 12 hours of daylight per day
12 - High heat & humidity
H - 10.0 inches of monthly rainfall
10.0 - 11 (Extreme) UV index
11 - 82°F sea temperature
82
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The September weather guide for Hong Kong 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)
More about Hong Kong
How hot is it in Hong Kong in September?
Daytime temperatures usually reach 86°F in Hong Kong in September with high heat and humidity, falling to 77°F at night.
How sunny is it in Hong Kong in September?
There are normally 6 hours of bright sunshine each day in Hong Kong in September - that's 51% of daylight hours.
How warm is the sea around Hong Kong in September?
The average sea temperature around Hong Kong in September is 82°F.
Does it rain in Hong Kong in September?
There are usually 14 days with some rain in Hong Kong in September and the average monthly rainfall is 10.0 inches.
What is the chance of a typhoon in Hong Kong in September?
On average 2.9 days in September in Hong Kong are likely to be affected by the passage of one or more tropical storms.
Hong Kong September sunrise & sunset times
Browse the sunrise and sunset times for Hong Kong in September 2025. Select a month to view Hong Kong sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 06:06 | 18:40 |
| Monday, 15th September 2025 | 06:10 | 18:27 |
| Tuesday, 30th September 2025 | 06:14 | 18:12 |
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