Chiang Mai vs Vientiane

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.

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

Chiang Mai reaches an average high of 33°C (91°F) and drops to 24°C (75°F) at night during May. The daily temperature range is 9°C, meaning moderate variation throughout the day.

Vientiane averages 32°C (90°F) for the high and 25°C (77°F) for the low, with a daily range of 7°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.

Chiang Mai receives approximately 109 mm of rainfall across 14 rain days during May. You can expect rain roughly every other day.

Vientiane sees 242 mm over 23 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%.