Weather Comparison
Side-by-side weather comparison for March
| Metric | Vientiane | Chiang Mai | Better |
|---|---|---|---|
| Average HighHigher is warmer | 30°C (86°F) | 34°C (93°F)▲ | Chiang Mai |
| Average LowHigher is milder | 23°C (73°F)▲ | 21°C (70°F) | Vientiane |
| Rain DaysFewer is drier | 12 days | 2 days▲ | Chiang Mai |
| PrecipitationLess is drier | 140 mm | 12 mm▲ | Chiang Mai |
| Sunshine HoursMore is sunnier | 4h/day | 11h/day▲ | Chiang Mai |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 15 km/h | 9 km/h▲ | Chiang Mai |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Chiang Mai edges ahead as the better destination in March. Chiang Mai offers 11 hours of daily sunshine with only 2 rain days, while Vientiane sees 4 sunshine hours and 12 rain days.
Vientiane can feel quite hot at 30°C, so plan for heat. Chiang Mai runs hot at 34°C.
For travelers who prioritize dry weather, Chiang Mai is the stronger choice in March. Chiang Mai receives 7 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Vientiane reaches an average high of 30°C (86°F) and drops to 23°C (73°F) at night during March. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.
Chiang Mai averages 34°C (93°F) for the high and 21°C (70°F) for the low, with a daily range of 13°C. The 4°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in March.
Vientiane receives approximately 140 mm of rainfall across 12 rain days during March. You can expect rain roughly every other day.
Chiang Mai sees 12 mm over 2 rain days. That makes Chiang Mai the drier option by 10 rain days and 128 mm of total precipitation.
Both cities share similar humidity levels at 78%.
Highs of 30°C, lows of 23°C, 12 rain days
Highs of 34°C, lows of 21°C, 2 rain days
Pack for both: lightweight breathable clothing, sunscreen SPF 50+, sunglasses, a wide-brimmed hat, moisture-wicking fabrics. These items are useful in either destination during March.
The table below shows average high temperatures and rain days for every month. March is highlighted for quick reference.
| Month | Vientiane | Chiang Mai | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 28°C | 7d | 28°C | 1d |
| Feb | 29°C | 9d | 31°C | 1d |
| Mar | 30°C | 12d | 34°C | 2d |
| Apr | 31°C | 15d | 36°C | 5d |
| May | 32°C | 17d | 33°C | 14d |
| Jun | 32°C | 18d | 31°C | 20d |
| Jul | 32°C | 17d | 30°C | 23d |
| Aug | 31°C | 15d | 29°C | 25d |
| Sep | 30°C | 12d | 29°C | 24d |
| Oct | 29°C | 9d | 29°C | 16d |
| Nov | 28°C | 7d | 28°C | 4d |
| Dec | 28°C | 6d | 27°C | 2d |
Vientiane Weather in March
Full forecast, packing tips, and activities
Chiang Mai Weather in March
Full forecast, packing tips, and activities