December weather forecast
Shanghai, China

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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 in Shanghai encompasses the chilly and quiet ambiance that winter brings. Lower temperatures, reaching a low of 4.7°C (40.5°F), and lower rainfall levels at 44mm (1.73"), give the city a quiet charm. Despite shorter daylight hours, the festive spirit keeps the city lively and vibrant. Even though it's the start of winter, Shanghai does not experience snow, hence outdoor activities continue. While December might not have the best weather, the city's Christmas markets and New Year celebrations provide a unique experience.

Temperature

December's arrival in Shanghai comes with a decrease in the average high-temperature, moving from a refreshing 17.3°C (63.1°F) in November to a fresh 11.1°C (52°F). Shanghai experiences a steady low-temperature of 4.7°C (40.5°F) throughout December.

Humidity

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

Rainfall

The month with the least rainfall is December, when the rain falls for 7.7 days and typically collects 44mm (1.73") of precipitation.

Sea temperature

In Shanghai, the average seawater temperature in December is 14°C (57.2°F).
Note: Swimming in 14°C (57.2°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation.

Daylight

With an average of 10h and 12min of daylight, December has the shortest days of the year in Shanghai.
On the first day of the month, sunrise is at 06:35 and sunset at 16:51. On the last day of December, in Shanghai, sunrise is at 06:52 and sunset at 17:01 CST.

Sunshine

The average sunshine in December in Shanghai is 4.1h.

UV index

December is the month with the lowest UV index in Shanghai, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: During December, 3 as the daily maximum UV index converts into the following advice:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What are December temperatures in Shanghai?

The high-temperature during December is 11.1°C (52°F) and the low-temperature is 4.7°C (40.5°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is appraised at 31°C (87.8°F).

What is the least humid month in Shanghai?

With an average relative humidity of 71%, December is the least humid month in Shanghai.

What is the average humidity in December in Shanghai?

In December, the average relative humidity in Shanghai is 71%.

What is the driest month in Shanghai?

December is the month with the least rainfall in Shanghai, China. Rain falls for 7.7 days and accumulates 44mm (1.73") of precipitation.

How much does it rain in Shanghai in December?

In Shanghai, during December, the rain falls for 7.7 days and regularly aggregates up to 44mm (1.73") of precipitation.

What is the water temperature 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?

The month with the shortest days in Shanghai is December, with an average of 10h and 12min of daylight.

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

The average day length in December in Shanghai is 10h and 10min.

What time are sunrise and sunset in December in Shanghai?

In December, on the first day of the month, sunrise is at 06:35 and sunset at 16:51. On the last day of the month, in Shanghai, sunrise is at 06:52 and sunset at 17:01 CST.

How long on average sun shines in December in Shanghai?

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

What is the month with the lowest UV index in Shanghai?

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

What is the UV index reading in December in Shanghai?

In December, the average daily maximum UV index in Shanghai, China, is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

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

The 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: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is July (Average sunshine: 6h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average UV index in December
Shanghai, China

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

The 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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Shanghai, China

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