December weather forecast
Naples, Italy

A distant view of Mount Vesuvius, from Naples in Italy, with a beautiful blue waterfront
A distant view of Mount Vesuvius, from Naples in Italy, with a beautiful blue waterfront

Weather in December

The first month of the winter, December, is still a mild month in Naples, Italy, with an average temperature ranging between max 13.6°C (56.5°F) and min 9.1°C (48.4°F).

Temperature

In December, the average high-temperature marginally drops from a comfortable 17.5°C (63.5°F) in November to a moderate 13.6°C (56.5°F). In Naples, the average low-temperature is 9.1°C (48.4°F).

Humidity

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

Rainfall

In Naples, Italy, in December, it is raining for 13.4 days, with typically 55mm (2.17") of accumulated precipitation. In Naples, during the entire year, the rain falls for 139.4 days and collects up to 569mm (22.4") of precipitation.

Snowfall

March through December are months without snowfall.

Sea temperature

In December, the average sea temperature in Naples is 16.4°C (61.5°F).
Note: For most, swimming in 16.4°C (61.5°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 07:07 and sunset at 16:36. On the last day of the month, sunrise is at 07:27 and sunset at 16:44 CET.

Sunshine

In December, the average sunshine is 6.2h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 average humidity in December in Naples?

The average relative humidity in December is 71%.

How much does it rain in Naples in December?

In Naples, in December, it is raining for 13.4 days, with typically 55mm (2.17") of accumulated precipitation.

When it does not snow in Naples?

March through December are months without snowfall.

Does it snow in Naples in December?

In Naples, in December, it doesn't snow. In January, it regularly snows.

How cold is the water in December in Naples?

In Naples, Italy, in December, the average water temperature is 16.4°C (61.5°F). For swimming, a surface water temperature of 16.4°C (61.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Naples?

The month with the shortest days in Naples is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Naples have in December?

The average day length in December is 9h and 18min.

What time are sunrise and sunset in December in Naples?

On the first day of December in Naples, Italy, sunrise is at 07:07 and sunset at 16:36. On the last day of the month, sunrise is at 07:27 and sunset at 16:44 CET.

How many hours of sunshine does Naples have in December?

In Naples, Italy, the average sunshine duration in December is 6.2h.

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

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the UV index reading in December in Naples?

In December, the average daily maximum UV index in Naples, Italy, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Naples, Italy

Average temperature in December - Naples, Italy
  • Average high temperature in December: 13.6°C

The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (12.3°C).

  • Average low temperature in December: 9.1°C

The month with the highest average low temperature is August (22.7°C).
The coldest months (with the lowest average low temperature) are January and February (7.8°C).

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Average pressure in December
Naples, Italy

Average pressure in December - Naples, Italy
  • Average pressure in December: 1018.4mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1014mbar).

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Average wind speed in December
Naples, Italy

Average wind speed in December - Naples, Italy
  • Average wind speed in December: 12.9km/h

The windiest month (with the highest average wind speed) is February (13.9km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).

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Average humidity in December
Naples, Italy

Average humidity in December - Naples, Italy
  • Average humidity in December: 71%

The months with the highest relative humidity are January and November (73%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in December
Naples, Italy

Average rainfall in December - Naples, Italy
  • Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is November (114mm).
The driest month (with the least rainfall) is August (8mm).

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Average rainfall days in December
Naples, Italy

Average rainfall days in December - Naples, Italy
  • Average rainfall days in December: 13.4 days

The month with the highest number of rainy days is January (15.4 days).
The months with the least rainy days are July and August (5.2 days).

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Average snowfall in December
Naples, Italy

Average snowfall in December - Naples, Italy
  • Average snowfall in December: 0mm

The months with the highest snowfall are January and February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in December
Naples, Italy

Average snowfall days in December - Naples, Italy
  • Average snowfall days in December: 0 days

The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in December
Naples, Italy

Average sea temperature in December - Naples, Italy
  • Average sea temperature in December: 16.4°C

The best month for swimming (with the highest average sea temperature) is August (26°C).
The coldest month (with the lowest average sea temperature) is February (13.9°C).

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Average daylight in December /
Average sunshine in December
Naples, Italy

Average daylight in December / Average sunshine in December - Naples, Italy
  • Average daylight in December: 9h and 18min

The month with the longest days is June (Average daylight: 15h and 4min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 6h and 12min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in December
Naples, Italy

Average sunshine days in December - Naples, Italy
  • Average sunshine days in December: 14.9 days

The month with the most sunshine days is July (24 days).
The month with the least sunshine days is February (11.1 days).

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Average UV index in December
Naples, Italy

Average UV index in December - Naples, Italy
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in December
Naples, Italy

Average cloud cover in December - Naples, Italy
  • Average cloud cover in December: 33

The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in December
Naples, Italy

Average visibility in December - Naples, Italy
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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