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Climate

Weather in Hong Kong SAR China in September

Weather in Hong Kong SAR China, September
In September, Hong Kong SAR China sees average highs of 29.6°C (85°F) and lows of 25°C (77°F), with around 293 mm of rain.

Hong Kong SAR China — September

Hong Kong SAR China September
Daytime high
29.6°C (85°F)
Overnight low
25°C (77°F)
Rainfall
293 mm
Best-time rank
Off-peak

How September compares

Hong Kong SAR China, September vs. the annual average (2025)
This month29.6°C (85°F) / 25°C (77°F) · 293 mm
Yearly average25.2°C (77°F) / 20.2°C (68°F) · 192 mm

September in Hong Kong SAR China runs 4.4°C (7.9°F) warmer than the yearly average, and is wetter than the yearly average. Pack layers you can adjust through the day — mild conditions, and something waterproof — this is a wetter month.

Common questions

What is the weather like in Hong Kong SAR China in September?

Average highs of 29.6°C (85°F) and lows of 25°C (77°F), with around 293 mm of rain.

Is September a good time to visit Hong Kong SAR China?

It is an off-peak month for comfort in Hong Kong SAR China; March, November, December tend to be more pleasant.

Updated climate normals, 2025