Hanoi
Vietnam
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Hanoi, Vietnam

The beautiful Tran Quoc Pagoda in Hanoi, Vietnam, with a view of more city structures in the far background
The beautiful Tran Quoc Pagoda in Hanoi, Vietnam, with a view of more city structures in the far background
January, the same as December, in Hanoi, Vietnam, is another pleasant winter month, with temperature in the range of an average low of 14.4°C (57.9°F) and an average high of 20.7°C (69.3°F).

Temperature

January is the coldest month, with an average high-temperature of 20.7°C (69.3°F) and an average low-temperature of 14.4°C (57.9°F).

Humidity

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

Rainfall

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

Daylight

The average length of the day in Hanoi is 11h.

Sunshine

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

UV index

In Hanoi, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 in January transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the coldest month in Hanoi?

January is the coldest month in Hanoi, Vietnam, with an average high-temperature of 20.7°C (69.3°F) and an average low-temperature of 14.4°C (57.9°F).

What is the temperature in January in Hanoi?

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

What is the average humidity in January in Hanoi?

In January, the average relative humidity is 73%.

How much does it rain in Hanoi in January?

In Hanoi, Vietnam, in January, it is raining for 10.5 days, with typically 17mm (0.67") of accumulated precipitation.

How many hours of daylight does Hanoi have in January?

In Hanoi, the average length of the day in January is 11h.

What is the month with the least sunshine in Hanoi?

The month with the least sunshine in Hanoi is January, with an average of 3.7h of sunshine.

How long on average sun shines in January in Hanoi?

In January, the average sunshine is 3.7h.

What is the UV index intensity in January in Hanoi?

The average daily maximum UV index in January is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
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).

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

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

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 lowest rainfall) is February (7mm).

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 lowest number of rainy days is February (7.8 days).

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

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in January: 3.7h

The month with most sunshine is June (Average sunshine: 10.1h).
The month with least sunshine is January (Average sunshine: 3.7h).

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

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).