Weather Comparison
Hong Kong vs Guangzhou
Side-by-side weather comparison for September
September Weather: Hong Kong vs Guangzhou
| Metric | Hong Kong | Guangzhou | Better |
|---|---|---|---|
| Average HighHigher is warmer | 29°C (84°F) | 30°C (86°F)▲ | Guangzhou |
| Average LowHigher is milder | 25°C (77°F)▲ | 24°C (75°F) | Hong Kong |
| Rain DaysFewer is drier | 17 days | 16 days▲ | Guangzhou |
| PrecipitationLess is drier | 215 mm | 180 mm▲ | Guangzhou |
| Sunshine HoursMore is sunnier | 9h/day | 9h/day | Tie |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 16 km/h | 13 km/h▲ | Guangzhou |
Which City is Better in September?
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Guangzhou edges ahead as the better destination in September. Guangzhou offers 9 hours of daily sunshine with only 16 rain days, while Hong Kong sees 9 sunshine hours and 17 rain days.
Hong Kong can feel quite hot at 29°C, so plan for heat. Guangzhou runs hot at 30°C.
For travelers who prioritize dry weather, Guangzhou is the stronger choice in September.
Temperature Comparison in September
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 30°C (86°F) for the high and 24°C (75°F) for the low, with a daily range of 6°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.
Rainfall Comparison 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 180 mm over 16 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%.
What to Pack: Hong Kong vs Guangzhou
Packing for Hong Kong in September
Highs of 29°C, lows of 25°C, 17 rain days
- ✓lightweight breathable clothing
- ✓sunscreen SPF 50+
- ✓sunglasses
- ✓a wide-brimmed hat
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Packing for Guangzhou in September
Highs of 30°C, lows of 24°C, 16 rain days
- ✓lightweight breathable clothing
- ✓sunscreen SPF 50+
- ✓sunglasses
- ✓a wide-brimmed hat
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Pack for both: lightweight breathable clothing, sunscreen SPF 50+, sunglasses, a wide-brimmed hat, waterproof jacket, compact umbrella, waterproof shoes, moisture-wicking fabrics. These items are useful in either destination during September.
Year-Round Comparison: Hong Kong vs Guangzhou
The table below shows average high temperatures and rain days for every month of the year, helping you find the best time to visit either city.September is highlighted for quick reference.
| Month | Hong Kong | Guangzhou | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 19°C | 4d | 19°C | 7d |
| Feb | 20°C | 6d | 20°C | 10d |
| Mar | 22°C | 10d | 23°C | 15d |
| Apr | 25°C | 14d | 27°C | 18d |
| May | 28°C | 20d | 29°C | 22d |
| Jun | 29°C | 24d | 31°C | 24d |
| Jul | 30°C | 24d | 32°C | 23d |
| Aug | 30°C | 24d | 32°C | 24d |
| Sep | 29°C | 17d | 30°C | 16d |
| Oct | 27°C | 7d | 28°C | 6d |
| Nov | 24°C | 5d | 25°C | 6d |
| Dec | 20°C | 4d | 20°C | 5d |
Hong Kong Weather in September
Full forecast, packing tips, and activities
Guangzhou Weather in September
Full forecast, packing tips, and activities