December weather forecast
Dalian, China

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Weather in December

The arrival of December brings with it the chill of winter in Dalian, China. The weather turns colder, signaling the close of the year. The drop in temperature is particularly stark, falling from 9.7°C (49.5°F) in November to 3.1°C (37.6°F) in December. Despite shorter days and lower temperatures, winter activities thrive, and the festive spirit fills the air. Snowfall adds a magical charm to the city's scenery, making it a winter wonderland.

Temperature

The onset of December results in a decrease in the average high-temperature, receding from a chilly 9.7°C (49.5°F) in November to a wintry 3.1°C (37.6°F). December brings an average low-temperature of -3.5°C (25.7°F) to Dalian.

Humidity

In Dalian, the average relative humidity in December is 58%.

Rainfall

In Dalian, China, in December, during 3.4 rainfall days, 11mm (0.43") of precipitation is typically accumulated. In Dalian, during the entire year, the rain falls for 72.5 days and collects up to 602mm (23.7") of precipitation.

Sea temperature

In Dalian, China, the average seawater temperature in December is 8.7°C (47.7°F).
Note: It is advised against swimming in 8.7°C (47.7°F) when it drops below 10°C (50°F). Such temperatures can cause extreme cold shock, leading to hyperventilation.

Daylight

The month with the shortest days in Dalian is December, with an average of 9h and 30min of daylight.
On the first day of December in Dalian, sunrise is at 06:53 and sunset at 16:31. On the last day of the month, sunrise is at 07:11 and sunset at 16:41 CST.

Sunshine

The month with the least sunshine in Dalian, China, is December, with an average of 5.9h of sunshine.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 2 during December translates into the following guidance:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

How cold is December in Dalian?

In Dalian, 3.1°C (37.6°F) is the average high-temperature and -3.5°C (25.7°F) is the average low-temperature during December. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 31°C (87.8°F).

What is the average humidity in December in Dalian?

In Dalian, China, the average relative humidity in December is 58%.

How many days does it rain in December in Dalian?

In December, the rain falls for 3.4 days. Throughout December, 11mm (0.43") of precipitation is accumulated.

How cold is the water in December in Dalian?

In December, the average sea temperature in Dalian is 8.7°C (47.7°F). Swimming in 8.7°C (47.7°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Dalian?

December has the shortest days of the year in Dalian, with an average of 9h and 30min of daylight.

How many hours of daylight does Dalian have in December?

The average day length in December in Dalian is 9h and 30min.

When are sunrise and sunset in December in Dalian?

In December, on the first day of the month, sunrise is at 06:53 and sunset at 16:31. On the last day of the month, in Dalian, China, sunrise is at 07:11 and sunset at 16:41 CST.

What is the month with the least sunshine in Dalian?

The month with the least sunshine in Dalian is December, with an average of 5.9h of sunshine.

How long on average sun shines in December in Dalian?

In Dalian, China, the average sunshine duration in December is 5.9h.

What are the months with the lowest UV index in Dalian?

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Dalian, China.

What is the UV index reading in December in Dalian?

In December, the average daily maximum UV index in Dalian is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Dalian, China

Average temperature in December - Dalian, China
  • Average high temperature in December: 3.1°C

The warmest month (with the highest average high temperature) is August (27.3°C).
The month with the lowest average high temperature is January (-0.4°C).

  • Average low temperature in December: -3.5°C

The month with the highest average low temperature is August (21.6°C).
The coldest month (with the lowest average low temperature) is January (-6.8°C).

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Average humidity in December
Dalian, China

Average humidity in December - Dalian, China
  • Average humidity in December: 58%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (55%).

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Average rainfall in December
Dalian, China

Average rainfall in December - Dalian, China
  • Average rainfall in December: 10.6mm

The wettest month (with the highest rainfall) is August (155.4mm).
The driest month (with the least rainfall) is February (5.8mm).

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Average rainfall days in December
Dalian, China

Average rainfall days in December - Dalian, China
  • Average rainfall days in December: 3.4 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is February (2.9 days).

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Average sea temperature in December
Dalian, China

Average sea temperature in December - Dalian, China
  • Average sea temperature in December: 8.7°C

The best month for swimming (with the highest average sea temperature) is August (23.6°C).
The coldest month (with the lowest average sea temperature) is February (2.8°C).

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Average daylight in December /
Average sunshine in December
Dalian, China

Average daylight in December / Average sunshine in December - Dalian, China
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is May (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average UV index in December
Dalian, China

Average UV index in December - Dalian, China
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January, November and December (UV index 2).

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Dalian, China

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