Hong Kong weather
in September
“Mild and bright — an underrated time to visit.”
Roughly 21 rainy days across the month, on average.
In september, Hong Kong settles into its warmer, more generous mood. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 29°C (85°F), cooling to 25°C after sunset. Expect meaningful rain — some 21 wet days across the month. Pack accordingly and let the weather choose your afternoons. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Hong Kong in September
- •Breathable cotton or linen, and a broad-brimmed hat
- •A compact travel umbrella — one you'll actually carry
- •Reef-safe sunscreen and polarised sunglasses
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Hong Kong in September
- →Quick-dry travel shirtAmazon · shop this
- →UPF sun hatAmazon · shop this
- →Packable rain jacketAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Waterproof dry bagAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
We may earn a small commission on any purchase — it doesn't change the price you pay.
Where to stay in Hong Kong
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Hong Kong across trusted platforms.
Compare hotels on Booking.com→Other places with a similar climate right now
Hong Kong in September — FAQ
Q01Is September a good time to visit Hong Kong?
Is September a good time to visit Hong Kong?
It is a challenging month — you may want to consider another time of year. In September, Hong Kong averages a high of 29°C (85°F) and a low of 25°C (77°F), with 277mm of rainfall across roughly 21 rainy days.
Q02What is the average temperature in Hong Kong in September?
What is the average temperature in Hong Kong in September?
The average high temperature in Hong Kong during September is 29°C (85°F), with an average low of 25°C (77°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Hong Kong have in September?
How many rainy days does Hong Kong have in September?
Hong Kong averages approximately 21 rainy days in September, with a total monthly rainfall of about 277mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Hong Kong in September?
What should I pack for Hong Kong in September?
For Hong Kong in September, pack light, breathable clothing (cotton or linen), a compact umbrella or waterproof jacket, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Hong Kong in September?
How crowded is Hong Kong in September?
Tourist crowds in Hong Kong during September are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely.