Vientiane weather in March
March in Vientiane: sweltering, a little rain — a great time to visit.
#5 of 12 months in Vientiane · #404 of 604 destinations to visit in March · comfort 70/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Vientiane climate normals — March
| Daytime high | 34°C / 92°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 31 mm / 1.2 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 61% | 💧 humid |
| Dew point | 19°C / 66°F | |
| Sunshine | 10.7 h/day | |
| Daylight | 12 h | |
| Wind | 10 km/h / 6 mph | |
| Air quality (US AQI) | 96 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Vientiane in March — FAQ
- Is March a good time to visit Vientiane?
- March in Vientiane: sweltering, a little rain — a great time to visit. It ranks #5 of 12 months for Vientiane on SeasonMap's comfort score (70/100).
- What is the weather like in Vientiane in March?
- In March, Vientiane averages a daily high of 33.5°C and a low of 22.7°C, with about 31.4 mm of rain over roughly 5.6 rainy days.
- What is the air quality in Vientiane in March?
- Vientiane has a mean US Air Quality Index of about 96 in March.