January weather forecast
Hanoi, Vietnam

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The beautiful Tran Quoc Pagoda in Hanoi, Vietnam
The beautiful Tran Quoc Pagoda in Hanoi, Vietnam

Weather in January

Kickstarting the year in Hanoi, January tends to be cooler when compared to the other months. This coolness contributes to making it the month with the lowest relative humidity throughout the year at 69%. The new year also carries the lowest rainfall, with the minimal precipitation recorded from 15mm (0.59"). This cool, less humid and dry weather makes January the optimum time for outdoor activities such as sightseeing. Moving into the next month, the temperatures start to rise slightly along with a gradual increase in rainfall.

Temperature

January is the month when Hanoi experiences its coldest temperatures, averaging a high of 20.7°C (69.3°F) and a low of 14.4°C (57.9°F).

Humidity

In January, the average relative humidity in Hanoi, Vietnam, is 73%.

Rainfall

In Hanoi, in January, during 10.5 rainfall days, 17mm (0.67") of precipitation is typically accumulated. In Hanoi, during the entire year, the rain falls for 181.2 days and collects up to 595mm (23.43") of precipitation.

Daylight

In January, the average length of the day in Hanoi is 11h and 1min.
On the first day of January in Hanoi, Vietnam, sunrise is at 06:33 and sunset at 17:26. On the last day of the month, sunrise is at 06:33 and sunset at 17:45 +07.

Sunshine

With an average of 3.7h of sunshine, January has the least sunshine of the year.

UV index

In Hanoi, the average daily maximum UV index in January is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 5 in January suggests the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What is the coldest month in Hanoi?

The month of January sees the average lowest temperatures in Hanoi, Vietnam, reaching 20.7°C (69.3°F) at the peak and 14.4°C (57.9°F) at the low.

What are the temperatures in Hanoi in January?

In Hanoi, in January, the average high-temperature is 20.7°C (69.3°F), and the average low-temperature is 14.4°C (57.9°F).

What is the average humidity in January in Hanoi?

The average relative humidity in January in Hanoi, Vietnam, is 73%.

How much does it rain in Hanoi in January?

In January, the rain falls for 10.5 days. Throughout January, 17mm (0.67") of precipitation is accumulated.

How many hours of daylight does Hanoi have in January?

The average day length in January in Hanoi, Vietnam, is 11h and 1min.

When is the sunrise / sunset in January in Hanoi?

In January, on the first day of the month, sunrise is at 06:33 and sunset at 17:26. On the last day of the month, in Hanoi, Vietnam, sunrise is at 06:33 and sunset at 17:45 +07.

What is the month with the least sunshine in Hanoi?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

How long on average sun shines in January in Hanoi?

The average sunshine duration in January in Hanoi, Vietnam, is 3.7h.

What is the UV index reading in January in Hanoi?

In January, the average daily maximum UV index in Hanoi is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Average temperature in January
Hanoi, Vietnam

Average temperature in January - Hanoi, Vietnam
  • Average high temperature in January: 20.7°C

The warmest month (with the highest average high temperature) is June (35.4°C).
The month with the lowest average high temperature is January (20.7°C).

  • Average low temperature in January: 14.4°C

The month with the highest average low temperature is June (26.6°C).
The coldest month (with the lowest average low temperature) is January (14.4°C).

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Average pressure in January
Hanoi, Vietnam

Average pressure in January - Hanoi, Vietnam
  • Average pressure in January: 1019.2mbar

The month with the highest atmospheric pressure is January (1019.2mbar).
The month with the lowest atmospheric pressure is June (1003.1mbar).

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Average wind speed in January
Hanoi, Vietnam

Average wind speed in January - Hanoi, Vietnam
  • Average wind speed in January: 8.1km/h

The windiest month (with the highest average wind speed) is March (9.9km/h).
The calmest months (with the lowest average wind speed) are August and September (6.9km/h).

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Average humidity in January
Hanoi, Vietnam

Average humidity in January - Hanoi, Vietnam
  • Average humidity in January: 73%

The months with the highest relative humidity are August and September (80%).
The month with the lowest relative humidity is December (69%).

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Average rainfall in January
Hanoi, Vietnam

Average rainfall in January - Hanoi, Vietnam
  • Average rainfall in January: 17mm

The wettest month (with the highest rainfall) is August (135mm).
The driest month (with the least rainfall) is February (7mm).

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Average rainfall days in January
Hanoi, Vietnam

Average rainfall days in January - Hanoi, Vietnam
  • Average rainfall days in January: 10.5 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is February (7.8 days).

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Average daylight in January /
Average sunshine in January
Hanoi, Vietnam

Average daylight in January / Average sunshine in January - Hanoi, Vietnam
  • Average daylight in January: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in January: 3h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in January
Hanoi, Vietnam

Average sunshine days in January - Hanoi, Vietnam
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is July (6.2 days).

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Average UV index in January
Hanoi, Vietnam

Average UV index in January - Hanoi, Vietnam
  • Average UV index in January: 5

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in January
Hanoi, Vietnam

Average cloud cover in January - Hanoi, Vietnam
  • Average cloud cover in January: 66

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is June (Cloud cover 40).

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Average visibility in January
Hanoi, Vietnam

Average visibility in January - Hanoi, Vietnam
  • Average visibility in January: 9km

The months with the highest visibility are February, March and June (10km).
The months with the lowest visibility are January, April, May, July, August, September, October, November and December (9km).

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Hanoi, Vietnam

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