Hanoi weather in January
January in Hanoi: nice, a little rain, with poor air quality — one of the best months to visit.
#2 of 12 months in Hanoi · #149 of 604 destinations to visit in January · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Hanoi climate normals — January
| Daytime high | 20°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 14°C / 56°F | |
| Feels like (high) | 20°C / 68°F | |
| Rainfall | 42 mm / 1.7 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 4.5 h/day | |
| Daylight | 11 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 111 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hanoi in January — FAQ
- Is January a good time to visit Hanoi?
- January in Hanoi: nice, a little rain, with poor air quality — one of the best months to visit. It ranks #2 of 12 months for Hanoi on SeasonMap's comfort score (81/100).
- What is the weather like in Hanoi in January?
- In January, Hanoi averages a daily high of 20.3°C and a low of 13.5°C, with about 42.4 mm of rain over roughly 8.8 rainy days.
- What is the air quality in Hanoi in January?
- Hanoi has a mean US Air Quality Index of about 111 in January.