Guangzhou vs Hong Kong

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.

Guangzhou sits in the comfortable travel range at 19°C. Hong Kong runs hot at 29°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.

Guangzhou reaches an average high of 19°C (66°F) and drops to 11°C (52°F) at night during September. The daily temperature range is 8°C, meaning moderate variation throughout the day.

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. 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.

Guangzhou receives approximately 50 mm of rainfall across 4 rain days during September. Rain is occasional, so a light rain jacket should suffice.

Hong Kong sees 215 mm over 17 rain days. That makes Guangzhou the drier option by 13 rain days and 165 mm of total precipitation.

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