Luang Prabang vs Vientiane

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Luang Prabang edges ahead as the better destination in September. Luang Prabang offers 8 hours of daily sunshine with only 22 rain days, while Vientiane sees 8 sunshine hours and 24 rain days.

Luang Prabang can feel quite hot at 29°C, so plan for heat. Vientiane runs hot at 30°C.

For travelers who prioritize dry weather, Luang Prabang is the stronger choice in September.

Luang Prabang reaches an average high of 29°C (84°F) and drops to 23°C (73°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Vientiane 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.

Luang Prabang receives approximately 194 mm of rainfall across 22 rain days during September. Rain is frequent, so waterproof gear is essential.

Vientiane sees 303 mm over 24 rain days. That makes Luang Prabang the drier option by 2 rain days and 109 mm of total precipitation.

Both cities share similar humidity levels at 78%.