End of the wetter season · Weather & things to do
Hong Kong Island and Kowloon in September
Little changes in Hong Kong Island and Kowloon from August: highs stay near 86°F (30°C), lows near 78°F (26°C), and about 6.3 in (161 mm) of rain falls.
Our comfort score puts it mid-table at 54/100, 8th of 12.
- Avg high
- 86°F (30°C)
- Avg low
- 78°F (26°C)
- Rain
- 6.3 in (161 mm)
- Humidity
- 81%
- Cloud cover
- 63%
- Daylight
- ~12 h 07 min
- Comfort score
- 54/100 · Fair
What September feels like
Heat sets the pace, with highs around 86°F (30°C). Get out early and keep the hottest hours for somewhere cool.
Even at night it stays warm, around 78°F (26°C).
Humidity averages 81%, so the air feels sticky and the heat feels stronger than the thermometer says.
Expect regular rain: about 6.3 in (161 mm) falls in the month.
Plan around September
September sits mid-table; the best months are November – January.
- Comfort improves from 41/100 in August to 54/100.
- Our Hong Kong, Lantau & Macau route recommends Oct – Dec, so September falls outside its suggested window.
What to pack for September
- Light, breathable clothes86°F afternoons
- Sun hat and sunscreenmidday heat
- Refillable water bottleeasy to dehydrate in the heat
- Quick-dry fabrics81% average humidity
- Rain jacket and waterproof shoes6.3 in of rain on average
- Comfortable walking shoesmost picks involve some walking
What to do in Hong Kong Island and Kowloon in September
With 6.3 in of rain, these picks lean toward food, drink and places with a roof, with outdoor options when the weather breaks.
Ozone at The Ritz-Carlton
Bar on the 118th floor of the ICC tower, high above the harbor.
Why now A sit-down stop to wait out showers in a month with 6.3 in of rain.
Kam's Roast Goose
Small Wan Chai shop known for crisp-skinned roast goose over rice.
Why now Easy to slot in when September's rain moves in.
Maxim's Palace City Hall
Huge banquet hall serving dim sum from push carts, with harbor-side windows.
Why now Keeps part of the day dry on wetter September days.
Man Mo Temple
Smoky 1847 temple hung with giant incense coils, dedicated to gods of literature and war.
M+ Museum
Museum of visual culture in West Kowloon with harbor-facing terraces.
Why now An indoor-leaning stop for a month with 6.3 in of rain.
Nearby in September
- Lantau Island in September~14 mi · highs 83°F, 6.8 in rain · 2°C (3°F) cooler by day, about as wet
- Macau in September~40 mi · highs 84°F, 7.7 in rain · 1°C (3°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Hong Kong Island and Kowloon in September: quick answers
Is September a good time to visit Hong Kong Island and Kowloon?
It's middling, scoring 54/100. The best months are November – January, at up to 91. Expect highs of 86°F (30°C) and 6.3 in (161 mm) of rain. Our Hong Kong, Lantau & Macau route recommends Oct – Dec, so September is outside its suggested window.
How hot is Hong Kong Island and Kowloon in September?
Average highs are 86°F (30°C) and average lows 78°F (26°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Hong Kong Island and Kowloon in September?
Yes: about 6.3 in (161 mm) of rain falls across September on average, the 5th-wettest month of the year. The annual total is about 55.2 in (1401 mm).
What should I pack for Hong Kong Island and Kowloon in September?
Bring light, breathable clothes (86°F afternoons), sun hat and sunscreen (midday heat), refillable water bottle (easy to dehydrate in the heat), quick-dry fabrics (81% average humidity) and rain jacket and waterproof shoes (6.3 in of rain on average).
More on Hong Kong Island and Kowloon
Planning Hong Kong Island and Kowloon in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.