Hanoi, Vietnam Weather
Hanoi hourly forecast: next 24 hours
Today's high of 100°F (38°C) is about 11°F (6°C) above the typical August high of 89°F (32°C).
Current conditions in detail
Hanoi weather tomorrow (Friday, August 14)
Tomorrow in Hanoi looks smoky haze, with a high of 100° and an overnight low of 79°. There is a 68% chance of rain - plan accordingly. Winds top out near 9 mph, and the UV index reaches 11 (extreme).
Hanoi 14-day forecast
About the weather in Hanoi
Hanoi has a humid subtropical climate, marked by hot, humid summers and generally mild winters. Average daytime highs range from about 70°F (21°C) in January to around 92°F (34°C) in June, and the city records roughly 175 days of measurable precipitation a year.
Hanoi weather: quick facts
- Hottest month: June - highs near 92°F (34°C)
- Coldest month: January - highs near 70°F (21°C)
- Record high: 106°F (41°C) · Record low: 40°F (4°C) (2015–2024)
- Wettest month: August (24 rainy days) · Sunniest: June (8.8 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on June. Highs average 92°F (34°C) and overnight lows stay near 80°F (27°C). The coolest month is January, with typical highs of 70°F (21°C) and lows around 58°F (14°C). Based on 2015–2024 weather data, temperatures have reached as high as 106°F (41°C) and dropped as low as 40°F (4°C).
Rain, sun and snow
August is usually the wettest month. It brings about 15.9 inches (404 mm) of rain over 24 days, while December is the driest. June brings the most sunshine, averaging 8.8 hours of sun a day.
Season by season
Spring (March through May)
Spring in Hanoi brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 71°F (22°C); expect showers on roughly 43 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Summer (June through August)
Summer in Hanoi brings hot afternoons, with daytime highs averaging 91°F (33°C) and nights around 79°F (26°C); expect showers on roughly 61 days across the season.
Fall (September through November)
Fall in Hanoi runs hot, with daytime highs averaging 83°F (28°C) and nights around 72°F (22°C); expect showers on roughly 44 days across the season.
Winter (December through February)
Winter in Hanoi is mild and warm, with daytime highs averaging 71°F (22°C) and nights around 59°F (15°C); expect showers on roughly 27 days across the season.
Average temperatures in Hanoi by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 70° | 58° | 11 | 2.6 in | 4.1 h/day | 77% |
| February | 72° | 60° | 9 | 1.9 in | 4.3 h/day | 77% |
| March | 78° | 66° | 13 | 3.0 in | 3.8 h/day | 82% |
| April | 84° | 71° | 12 | 3.8 in | 6.3 h/day | 82% |
| May | 89° | 77° | 18 | 8.4 in | 8.3 h/day | 81% |
| June | 92° | 80° | 17 | 9.5 in | 8.8 h/day | 79% |
| July | 91° | 80° | 20 | 11.9 in | 8.7 h/day | 81% |
| August | 89° | 79° | 24 | 15.9 in | 7.9 h/day | 85% |
| September | 87° | 77° | 22 | 13.7 in | 7.7 h/day | 85% |
| October | 83° | 71° | 13 | 7.5 in | 7.7 h/day | 78% |
| November | 79° | 67° | 9 | 2.3 in | 7.2 h/day | 77% |
| December | 70° | 58° | 7 | 1.4 in | 5.3 h/day | 72% |