Hoi An vs Nha Trang

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Hoi An edges ahead as the better destination in September. Hoi An offers 9 hours of daily sunshine with only 23 rain days, while Nha Trang sees 9 sunshine hours and 26 rain days.

Hoi An can feel quite hot at 30°C, so plan for heat. Nha Trang runs hot at 30°C.

For travelers who prioritize dry weather, Hoi An is the stronger choice in September.

Hoi An reaches an average high of 30°C (86°F) and drops to 25°C (77°F) at night during September. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Nha Trang 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 296 mm of rainfall across 23 rain days during September. Rain is frequent, so waterproof gear is essential.

Nha Trang sees 293 mm over 26 rain days. That makes Hoi An the drier option by 3 rain days and 3 mm of total precipitation.

Humidity also differs: Hoi An averages 78% while Nha Trang sits at 82%. Nha Trang will feel muggier, especially at higher temperatures.