Vientiane vs Luang Prabang

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Luang Prabang edges ahead as the better destination in September. Luang Prabang offers 9 hours of daily sunshine with only 22 rain days, while Vientiane sees 8 sunshine hours and 24 rain days.

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

For travelers who prioritize dry weather, Luang Prabang is the stronger choice in September. Luang Prabang receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Vientiane reaches an average high of 30°C (86°F) and drops to 24°C (75°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Luang Prabang averages 29°C (84°F) for the high and 23°C (73°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.

Vientiane receives approximately 303 mm of rainfall across 24 rain days during September. Rain is frequent, so waterproof gear is essential.

Luang Prabang sees 194 mm over 22 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%.