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30-year normals (1991-2020)
Hanoi has a tropical monsoon climate, classified as Am in the Köppen system. The warmest month is June with an average high of 33°C, while the coldest month is January with lows dropping to 13°C. The annual temperature range of 20°C reflects moderate seasonal variation.
The driest month is December with only 7 rain days and 35mm of precipitation. For travellers, December through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 78% to 78% throughout the year.
Based on temperature and rainfall data, the best months to visit Hanoi are October, November, December. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
Full Best Time to Visit GuideWarmest Month
33°C
June
Coldest Month
13°C
January
Driest Month
7 days
December
Annual Range
20°C
13° to 33°
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 20°C | 13°C | 8 | 4h | View |
| February | 22°C | 15°C | 8 | 4h | View |
| March | 25°C | 18°C | 11 | 4h | View |
| April | 29°C | 22°C | 11 | 7h | View |
| May | 31°C | 24°C | 17 | 8h | View |
| June | 33°C | 26°C | 19 | 8h | View |
| July | 32°C | 26°C | 21 | 8h | View |
| August | 31°C | 25°C | 23 | 8h | View |
| September | 30°C | 24°C | 19 | 8h | View |
| October | 28°C | 21°C | 12 | 8h | View |
| November | 25°C | 18°C | 7 | 7h | View |
| December | 21°C | 14°C | 7 | 6h | View |
January
8 rain days, 4h sun
February
8 rain days, 4h sun
March
11 rain days, 4h sun
April
11 rain days, 7h sun
May
17 rain days, 8h sun
June
19 rain days, 8h sun
July
21 rain days, 8h sun
August
23 rain days, 8h sun
September
19 rain days, 8h sun
October
12 rain days, 8h sun
November
7 rain days, 7h sun
December
7 rain days, 6h sun
Hanoi in June
Data Sources for Hanoi
Climate normals represent 30-year averages (1991-2020). Individual years may vary.