Hong Kong · September
Run in the morning.
Comfortable average high of 85°F, dipping to 77°F at night. Humidity averages 85% — the limiting factor on most runs. Expect 25 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
85° / 77°F
Humidity
85%
Rain days
25/mo
Wind
10 mph
What September feels like in Hong Kong
Sunrise
06:10
Mid-month average
Sunset
18:26
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Hong Kong in September
The kit for September in Hong Kong: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
September vs the surrounding months
vs August
0° avg high
-4 rain days
Hong Kong in August →
September
85°F avg high
25 rain days
Best: morning
vs October
+4° avg high
+10 rain days
Hong Kong in October →
Frequently Asked Questions
What is the best time of day to run in Hong Kong in September?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Hong Kong in September?+
Average high 85°F, average low 77°F.
How does September compare to surrounding months in Hong Kong?+
Compared to August (avg high 85°F), September is cooler. Compared to October (avg high 80°F), September is warmer.
Does it rain often in Hong Kong in September?+
Expect about 25 measurable rain days in September, on average.