Vientiane vs Chiang Mai

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Chiang Mai edges ahead as the better destination in May. Chiang Mai offers 10 hours of daily sunshine with only 14 rain days, while Vientiane sees 9 sunshine hours and 23 rain days.

Vientiane can feel quite hot at 32°C, so plan for heat. Chiang Mai runs hot at 33°C.

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

Vientiane reaches an average high of 32°C (90°F) and drops to 25°C (77°F) at night during May. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Chiang Mai averages 33°C (91°F) for the high and 24°C (75°F) for the low, with a daily range of 9°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 May.

Vientiane receives approximately 242 mm of rainfall across 23 rain days during May. Rain is frequent, so waterproof gear is essential.

Chiang Mai sees 109 mm over 14 rain days. That makes Chiang Mai the drier option by 9 rain days and 133 mm of total precipitation.

Both cities share similar humidity levels at 78%.