Guangzhou vs Hong Kong

Guangzhou and Hong Kong are closely matched in September. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Guangzhou can feel quite hot at 30°C, so plan for heat. Hong Kong runs hot at 29°C.

For travelers who prioritize dry weather, Guangzhou is the stronger choice in September. Hong Kong receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Guangzhou reaches an average high of 30°C (86°F) and drops to 24°C (75°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Hong Kong averages 29°C (84°F) for the high and 25°C (77°F) for the low, with a daily range of 4°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Guangzhou receives approximately 180 mm of rainfall across 16 rain days during September. Rain is frequent, so waterproof gear is essential.

Hong Kong sees 215 mm over 17 rain days. That makes Guangzhou the drier option by 1 rain day and 35 mm of total precipitation.

Both cities share similar humidity levels at 78%.