December weather forecast and climate
Shanghai, China

The mother River Huangpu dividing the city into two in Shanghai, China
The mother River Huangpu dividing the city into two in Shanghai, China

Weather in December

December, the first month of the winter, in Shanghai, is also a fresh month, with average temperature fluctuating between 11.1°C (52°F) and 4.7°C (40.5°F).

Temperature

In Shanghai, the average high-temperature decreases, from an enjoyable 17.3°C (63.1°F) in November, to a cool 11.1°C (52°F). In December, in Shanghai, the average low-temperature is 4.7°C (40.5°F).

Humidity

December is the least humid month, with an average relative humidity of 71%.

Rainfall

December is the month with the least rainfall in Shanghai, China. Rain falls for 7.7 days and accumulates 43.9mm (1.73") of precipitation.

Sea temperature

In December, the average sea temperature is 14°C (57.2°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

The month with the shortest days in Shanghai, China, is December, with an average of 10.1h of daylight.

Sunshine

In December, the average sunshine is 4.1h.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
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. 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.
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FAQ

What is the least humid month in Shanghai?

The least humid month in Shanghai, China, is December, with an average relative humidity of 71%.

What is the average humidity in December in Shanghai?

In December, the average relative humidity is 71%.

What is the driest month in Shanghai?

December is the month with the least rainfall in Shanghai. Rain falls for 7.7 days and accumulates 43.9mm (1.73") of precipitation.

How many days does it rain in December in Shanghai?

In December, in Shanghai, China, the rain falls for 7.7 days. Throughout December, 43.9mm (1.73") of precipitation is accumulated.

How cold is the water in December in Shanghai?

In Shanghai, in December, the average water temperature is 14°C (57.2°F). Swimming in 14°C (57.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Shanghai?

With an average of 10.1h of daylight, December has the shortest days of the year.

How many hours of daylight does Shanghai have in December?

The average length of the day in December in Shanghai is 10.1h.

How many hours of sunshine does Shanghai have in December?

In December, the average sunshine in Shanghai is 4.1h.

When is the lowest UV index in Shanghai?

The month with the lowest UV index in Shanghai, China, is December, with an average maximum UV index of 3.

How high is the UV index in December in Shanghai?

In Shanghai, China, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in December
Shanghai, China

Average temperature in December - Shanghai, China
  • Average high temperature in December: 11.1°C

The warmest month (with the highest average high temperature) is July (32.2°C).
The month with the lowest average high temperature is January (8.1°C).

  • Average low temperature in December: 4.7°C

Months with the highest average low temperature are July and August (25.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).

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Average humidity in December
Shanghai, China

Average humidity in December - Shanghai, China
  • Average humidity in December: 71%

The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is December (71%).

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Average rainfall in December
Shanghai, China

Average rainfall in December - Shanghai, China
  • Average rainfall in December: 43.9mm

The wettest month (with the highest rainfall) is August (213.7mm).
The driest month (with the least rainfall) is December (43.9mm).

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Average rainfall days in December
Shanghai, China

Average rainfall days in December - Shanghai, China
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is June (12.7 days).
The month with the least rainy days is October (6.9 days).

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Average sea temperature in December
Shanghai, China

Average sea temperature in December - Shanghai, China
  • Average sea temperature in December: 14°C

The best month for swimming (with the highest average sea temperature) is August (27°C).
The coldest months (with the lowest average sea temperature) are February and March (8°C).

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

Average daylight in December / Average sunshine in December - Shanghai, China
  • Average daylight in December: 10.1h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in December: 4.1h

The month with the most sunshine is July (Average sunshine: 6.2h).
The month with the least sunshine is January (Average sunshine: 3.7h).

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Average UV index in December
Shanghai, China

Average UV index in December - Shanghai, China
  • Average UV index in December: 3

Months with the highest UV index are June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 3).

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