Hanoi weather in January
In January, Hanoi has an average high of 21 °C69 °F and an average low of 11 °C52 °F, with about 32 mm1.3 in of precipitation. January is the coldest month of the year and ranks 10th for precipitation.
How January compares with other months
Compared with December, January is 0.6 °C1 °F cooler on average and wetter by 7 mm0.3 in. Compared with February, January is 2.8 °C5 °F cooler on average and wetter by 10 mm0.4 in. Daylight lasts about 11.0 hours around the middle of the month. Average relative humidity is 81% and the average cloud amount 76%.
Is January a good time to visit Hanoi?
Yes — January is one of the most comfortable months to visit Hanoi by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in January
For Hanoi in January, pack light layers — T-shirts plus a light sweater or jacket.
January in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Hanoi | 2169 | 1152 | 321.3 |
| Thanh Xuân | 2169 | 1152 | 321.3 |
| Gia Lâm | 2170 | 1152 | 351.4 |
| Bắc Ninh | 2170 | 1152 | 351.4 |
| Bắc Giang | 2169 | 1051 | 371.4 |
| Hải Dương | 2170 | 1152 | 351.4 |
| Phủ Lý | 2170 | 1253 | 301.2 |
| Thái Nguyên | 2169 | 1051 | 351.4 |
| Nam Định | 2169 | 1355 | 331.3 |
Other months in Hanoi
- January21 °C69 °F / 11 °C52 °F
- February24 °C75 °F / 13 °C56 °F
- March27 °C81 °F / 17 °C62 °F
- April31 °C88 °F / 20 °C69 °F
- May32 °C90 °F / 24 °C75 °F
- June32 °C90 °F / 26 °C78 °F
- July32 °C90 °F / 26 °C78 °F
- August32 °C89 °F / 25 °C77 °F
- September31 °C87 °F / 24 °C75 °F
- October28 °C83 °F / 20 °C69 °F
- November25 °C77 °F / 16 °C61 °F
- December21 °C70 °F / 12 °C53 °F
Frequently asked questions
How warm is Hanoi in January?
In January the average high in Hanoi is 21 °C (69 °F) and the average low is 11 °C (52 °F).
Does it rain a lot in Hanoi in January?
On average about 32 mm (1.3 in) of precipitation falls in January; it ranks 10th of the 12 months.
Is January the warmest month in Hanoi?
No. The warmest month in Hanoi is June, with an average high of 32 °C (90 °F). The coldest month is January, with an average low of 11 °C (52 °F).
How long is the day in Hanoi in January?
In the middle of January the day in Hanoi lasts about 11.0 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Hanoi in January?
The average relative humidity in January is about 81%. This is a long-term average for the whole day.
How cloudy is Hanoi in January?
On average about 76% of the sky is covered by cloud in January. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 88 m, while Hanoi lies at about 10 m. Temperatures on this page were therefore adjusted by +0.5 °C0.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.