Hanoi weather in August
August in Hanoi: sweltering, soaked, with poor air quality — one of the weakest months to visit.
#12 of 12 months in Hanoi · #581 of 604 destinations to visit in August · comfort 39/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Hanoi climate normals — August
| Daytime high | 32°C / 89°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 39°C / 102°F | |
| Rainfall | 364 mm / 14.3 in | ⛈ soaked |
| Rainy days | 24 days | |
| Humidity | 87% | 💦 very humid |
| Dew point | 26°C / 78°F | |
| Sunshine | 7.9 h/day | |
| Daylight | 12.8 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 132 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hanoi in August — FAQ
- Is August a good time to visit Hanoi?
- August in Hanoi: sweltering, soaked, with poor air quality — one of the weakest months to visit. It ranks #12 of 12 months for Hanoi on SeasonMap's comfort score (39/100).
- What is the weather like in Hanoi in August?
- In August, Hanoi averages a daily high of 31.8°C and a low of 25.8°C, with about 363.8 mm of rain over roughly 24 rainy days.
- What is the air quality in Hanoi in August?
- Hanoi has a mean US Air Quality Index of about 132 in August.