Weather Comparison
Side-by-side weather comparison for September
| Metric | Hoi An | Da Nang | Better |
|---|---|---|---|
| Average HighHigher is warmer | 30°C (86°F) | 30°C (86°F) | Tie |
| Average LowHigher is milder | 23°C (73°F) | 25°C (77°F)▲ | Da Nang |
| Rain DaysFewer is drier | 12 days▲ | 23 days | Hoi An |
| PrecipitationLess is drier | 140 mm▲ | 293 mm | Hoi An |
| Sunshine HoursMore is sunnier | 4h/day | 9h/day▲ | Da Nang |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 15 km/h | 13 km/h▲ | Da Nang |
Hoi An and Da Nang 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.
Hoi An can feel quite hot at 30°C, so plan for heat. Da Nang runs hot at 30°C.
For travelers who prioritize dry weather, Hoi An is the stronger choice in September. Da Nang receives 5 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Hoi An reaches an average high of 30°C (86°F) and drops to 23°C (73°F) at night during September. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.
Da Nang averages 30°C (86°F) for the high and 25°C (77°F) for the low, with a daily range of 5°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.
Hoi An receives approximately 140 mm of rainfall across 12 rain days during September. You can expect rain roughly every other day.
Da Nang sees 293 mm over 23 rain days. That makes Hoi An the drier option by 11 rain days and 153 mm of total precipitation.
Both cities share similar humidity levels at 78%.
Highs of 30°C, lows of 23°C, 12 rain days
Highs of 30°C, lows of 25°C, 23 rain days
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.
The table below shows average high temperatures and rain days for every month. September is highlighted for quick reference.
| Month | Hoi An | Da Nang | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 28°C | 7d | 24°C | 17d |
| Feb | 29°C | 9d | 25°C | 11d |
| Mar | 30°C | 12d | 27°C | 10d |
| Apr | 31°C | 15d | 30°C | 9d |
| May | 32°C | 17d | 32°C | 15d |
| Jun | 32°C | 18d | 33°C | 14d |
| Jul | 32°C | 17d | 32°C | 16d |
| Aug | 31°C | 15d | 32°C | 19d |
| Sep | 30°C | 12d | 30°C | 23d |
| Oct | 29°C | 9d | 28°C | 25d |
| Nov | 28°C | 7d | 26°C | 22d |
| Dec | 28°C | 6d | 24°C | 23d |
Hoi An Weather in September
Full forecast, packing tips, and activities
Da Nang Weather in September
Full forecast, packing tips, and activities