Hanoi Climate by Month
Hanoi, Vietnam
Hot days and mild nights all year, with a rainy season from May to September.
The climate in Hanoi is one of hot days and mild nights all year, with a rainy season from May to September. June is the warmest month, with highs around 92°F (33°C); January is the coolest at 67°F (20°C), and nights dip to 58°F (14°C). It gets 60 in (1529 mm) of rain a year, 79% of it from May to September. The air is humid, averaging 81% relative humidity.
- Warmest month
- 92°F(33°C)
- Average high, June
- Coldest nights
- 58°F(14°C)
- Average low, January
- Rain per year
- 60 in(1529 mm)
- Wettest: July
- Humidity
- 81%
- Sunniest: June
Best and worst months in Hanoi
Best for weatherThe most comfortable weather comes in March, November and December, with highs around 74°F (24°C) and about 1.5 in (38 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; July is the wettest, with 12 in (295 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in December.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hanoi weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 67°F(20°C) | 58°F(14°C) | 0.7 in(18 mm) | 78% | 2.5 |
| FebFebruary | 69°F(21°C) | 60°F(16°C) | 0.9 in(23 mm) | 86% | 3.1 |
| MarMarchBest | 73°F(23°C) | 64°F(18°C) | 1.5 in(39 mm) | 88% | 3.4 |
| AprApril | 81°F(27°C) | 71°F(21°C) | 3.1 in(78 mm) | 86% | 4.2 |
| MayMay | 88°F(31°C) | 76°F(24°C) | 7.4 in(187 mm) | 79% | 5.0 |
| JunJune | 92°F(33°C) | 79°F(26°C) | 8.1 in(206 mm) | 80% | 5.2 |
| JulJuly | 91°F(33°C) | 79°F(26°C) | 12 in(295 mm) | 79% | 4.9 |
| AugAugust | 90°F(32°C) | 78°F(26°C) | 11 in(289 mm) | 80% | 4.8 |
| SepSeptember | 88°F(31°C) | 76°F(25°C) | 8.9 in(226 mm) | 82% | 4.7 |
| OctOctober | 85°F(29°C) | 72°F(22°C) | 3.7 in(93 mm) | 79% | 4.4 |
| NovNovemberBest | 79°F(26°C) | 66°F(19°C) | 1.9 in(47 mm) | 81% | 3.5 |
| DecDecemberBest | 71°F(22°C) | 60°F(15°C) | 1.1 in(28 mm) | 74% | 2.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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