Vientiane weather in April
April in Vientiane: sweltering, a little rain, with poor air quality — a good time to visit.
#7 of 12 months in Vientiane · #543 of 604 destinations to visit in April · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Vientiane climate normals — April
| Daytime high | 35°C / 94°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 39°C / 102°F | |
| Rainfall | 47 mm / 1.8 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 56% | 🍃 comfortable |
| Dew point | 20°C / 67°F | |
| Sunshine | 11 h/day | |
| Daylight | 12.6 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 110 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Vientiane in April — FAQ
- Is April a good time to visit Vientiane?
- April in Vientiane: sweltering, a little rain, with poor air quality — a good time to visit. It ranks #7 of 12 months for Vientiane on SeasonMap's comfort score (62/100).
- What is the weather like in Vientiane in April?
- In April, Vientiane averages a daily high of 34.6°C and a low of 24.8°C, with about 46.5 mm of rain over roughly 7.6 rainy days.
- What is the air quality in Vientiane in April?
- Vientiane has a mean US Air Quality Index of about 110 in April.