Hanoi weather in October
October in Hanoi: hot, soaked, with poor air quality — a fair time to visit.
#7 of 12 months in Hanoi · #542 of 604 destinations to visit in October · comfort 59/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Hanoi climate normals — October
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 233 mm / 9.2 in | ⛈ soaked |
| Rainy days | 14 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 6.7 h/day | |
| Daylight | 11.7 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 104 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hanoi in October — FAQ
- Is October a good time to visit Hanoi?
- October in Hanoi: hot, soaked, with poor air quality — a fair time to visit. It ranks #7 of 12 months for Hanoi on SeasonMap's comfort score (59/100).
- What is the weather like in Hanoi in October?
- In October, Hanoi averages a daily high of 27.5°C and a low of 21.3°C, with about 233.4 mm of rain over roughly 14.2 rainy days.
- What is the air quality in Hanoi in October?
- Hanoi has a mean US Air Quality Index of about 104 in October.