Hong Kong vs Guangzhou

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Guangzhou edges ahead as the better destination in September. Guangzhou offers 4 hours of daily sunshine with only 4 rain days, while Hong Kong sees 10 sunshine hours and 17 rain days.

Hong Kong can feel quite hot at 29°C, so plan for heat. Guangzhou is also comfortable at 19°C.

For travelers who prioritize dry weather, Guangzhou is the stronger choice in September. Hong Kong receives 6 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Hong Kong reaches an average high of 29°C (84°F) and drops to 25°C (77°F) at night during September. The daily temperature range is 4°C, meaning relatively stable temperatures from day to night.

Guangzhou averages 19°C (66°F) for the high and 11°C (52°F) for the low, with a daily range of 8°C. There is a notable 10°C gap between the two cities, so expect a very different feel.

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

Hong Kong receives approximately 215 mm of rainfall across 17 rain days during September. Rain is frequent, so waterproof gear is essential.

Guangzhou sees 50 mm over 4 rain days. That makes Guangzhou the drier option by 13 rain days and 165 mm of total precipitation.

Humidity also differs: Hong Kong averages 78% while Guangzhou sits at 75%. Hong Kong will feel muggier, especially at higher temperatures.