Overview
Hanoi is in Vietnam. The figures below are long-term monthly averages (2014-2023), not a forecast.
- Warmest month: June, with daytime highs around 33°C.
- Coolest month: January, with daytime highs around 21°C.
- Driest month: December, about 36 mm of rain.
- Wettest month: August, about 398 mm of rain.
- Sunniest month: June, about 8.8 hr of sunshine per day.
Climate by month
| Month | Day high | Night low | Rain (mm) | Rainy days | Sun (h/day) | Humidity | Wind (km/h) |
|---|---|---|---|---|---|---|---|
| January | 21°C | 14°C | 57 mm | 10 | 4.4 | 77% | 9 km/h |
| February | 22°C | 15°C | 46 mm | 9 | 4.2 | 77% | 9 km/h |
| March | 26°C | 19°C | 73 mm | 13 | 3.6 | 82% | 10 km/h |
| April | 29°C | 22°C | 104 mm | 13 | 6.1 | 82% | 10 km/h |
| May | 32°C | 25°C | 198 mm | 17 | 8.6 | 81% | 10 km/h |
| June | 33°C | 27°C | 216 mm | 17 | 8.8 | 79% | 9 km/h |
| July | 33°C | 26°C | 277 mm | 20 | 8.5 | 81% | 8 km/h |
| August | 32°C | 26°C | 398 mm | 24 | 7.7 | 86% | 7 km/h |
| September | 31°C | 25°C | 309 mm | 21 | 8.0 | 85% | 7 km/h |
| October | 28°C | 22°C | 188 mm | 14 | 7.8 | 78% | 9 km/h |
| November | 26°C | 19°C | 63 mm | 10 | 7.0 | 78% | 8 km/h |
| December | 21°C | 14°C | 36 mm | 7 | 5.4 | 72% | 9 km/h |
Similar destinations
Data and sources
- Air climate: Open-Meteo Historical Weather API (ERA5 / ERA5-Land reanalysis), 2014-2023. CC BY 4.0 (Open-Meteo); underlying ERA5 data: Copernicus licence
- Sea temperature: not available for this destination.
- Last updated October 8, 2026.