Vientiane weather in July
July in Vientiane: sweltering, soaked, with clean air — a hit-or-miss time to visit.
#10 of 12 months in Vientiane · #559 of 604 destinations to visit in July · comfort 49/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Vientiane climate normals — July
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 38°C / 100°F | |
| Rainfall | 285 mm / 11.2 in | ⛈ soaked |
| Rainy days | 26 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 9 h/day | |
| Daylight | 13.1 h | |
| Wind | 9 km/h / 6 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Vientiane in July — FAQ
- Is July a good time to visit Vientiane?
- July in Vientiane: sweltering, soaked, with clean air — a hit-or-miss time to visit. It ranks #10 of 12 months for Vientiane on SeasonMap's comfort score (49/100).
- What is the weather like in Vientiane in July?
- In July, Vientiane averages a daily high of 31.1°C and a low of 25.1°C, with about 284.6 mm of rain over roughly 25.6 rainy days.
- What is the air quality in Vientiane in July?
- Vientiane has a mean US Air Quality Index of about 37 in July.