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

December 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
The first month of the winter, December, is still a pleasant month in Hanoi, Vietnam, with average temperature varying between 15.3°C (59.5°F) and 21.8°C (71.2°F).

Temperature

In Hanoi, the average high-temperature marginally drops, from a warm 25.2°C (77.4°F) in November, to a pleasant 21.8°C (71.2°F). In December, in Hanoi, Vietnam, the average low-temperature is 15.3°C (59.5°F).

Humidity

In Hanoi, the average relative humidity is 75%.

Rainfall

In Hanoi, during 6 rainfall days, 23.4mm (0.9") of precipitation is typically accumulated. In Hanoi, during the entire year, the rain falls for 144.5 days and collects up to 1676.2mm (66") of precipitation.

Daylight

December has the shortest days of the year, with an average of 10.9h of daylight.

Sunshine

In Hanoi, the average sunshine is 3.5h.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Hanoi?

The average high-temperature, in December, in Hanoi, is 21.8°C (71.2°F), while the average low-temperature is 15.3°C (59.5°F).

What is the average humidity in December in Hanoi?

The average relative humidity in December in Hanoi is 75%.

How many days does it rain in December in Hanoi?

In December, the rain falls for 6 days. Throughout December, 23.4mm (0.9") of precipitation is accumulated.

What is the month with the shortest days in Hanoi?

With an average of 10.9h of daylight, December has the shortest days of the year in Hanoi, Vietnam.

What is the average length of the day in December in Hanoi?

In Hanoi, Vietnam, the average length of the day in December is 10.9h.

How long on average sun shines in December in Hanoi?

The average sunshine in December is 3.5h.

When is the lowest UV index in Hanoi?

Months with the lowest UV index in Hanoi are January and December, with an average maximum UV index of 7.

What is the UV index intensity in December in Hanoi?

In December, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in December - Hanoi, Vietnam
  • Average high temperature in December: 21.8°C

The warmest month (with the highest average high temperature) is July (32.9°C).
The month with the lowest average high temperature is January (19.3°C).

  • Average low temperature in December: 15.3°C

The month with the highest average low temperature is July (26.1°C).
The coldest month (with the lowest average low temperature) is January (13.7°C).

Average humidity in December - Hanoi, Vietnam
  • Average humidity in December: 75%

Months with the highest relative humidity are March and April (83%).
The month with the lowest relative humidity is November (74%).

Average rainfall in December - Hanoi, Vietnam
  • Average rainfall in December: 23.4mm

The wettest month (with the highest rainfall) is August (318mm).
The driest month (with the lowest rainfall) is January (18.6mm).

Average rainfall days in December - Hanoi, Vietnam
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is August (16.7 days).
The month with the lowest number of rainy days is December (6 days).

Average daylight in December / Average sunshine in December - Hanoi, Vietnam
  • Average daylight in December: 10.9h

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 December: 3.5h

The month with most sunshine is July (Average sunshine: 5.9h).
The month with least sunshine is March (Average sunshine: 1.4h).

Average UV index in December - Hanoi, Vietnam
  • Average UV index in December: 7

Months with the highest UV index are March, April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 7).