December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average sea temperature in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

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

Weather in December

Winter begins in full swing in December in Naples. The weather continues with the trend set in November, marked by cold temperatures and substantial rainfall of 55mm (2.17"). The metropolis experiences its shortest daylight hours, but the sun still musters a decent show. The winter chill has fully set in, so warm clothing should be an essential part of any Naples December packing list. Despite the cold and rain, Christmas festivities add a warm, uplifting charm to the city during this month.

Temperature

The start of December in Naples involves a subtle temperature drop, shifting from an enjoyable 17.5°C (63.5°F) in November to a moderate 13.6°C (56.5°F). Naples experiences an average nighttime temperature of 9.1°C (48.4°F) in December, reflecting a minor difference from the day's peak.

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Naples, Italy, in December, during 13.4 rainfall days, 55mm (2.17") of precipitation is typically accumulated. 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 in Naples, Italy.

Sea temperature

In Naples, the average seawater temperature in December is 16.4°C (61.5°F).
Note: The majority of individuals find it unpleasurable to swim in 16.4°C (61.5°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°F).

Daylight

December has the shortest days of the year in Naples, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 07:08 and sunset at 16:35. On the last day of the month, sunrise is at 07:27 and sunset at 16:45 CET.

Sunshine

The average sunshine in December is 6.2h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Naples. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 3 during December translates into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Updated: Jan 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Naples in December?

In December, the average high-temperature and low-temperature in Naples, Italy, are 13.6°C (56.5°F) and 9.1°C (48.4°F) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is calculated to be 33°C (91.4°F).

What is the average humidity in December in Naples?

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

How many days does it rain in December in Naples?

In Naples, Italy, during December, the rain falls for 13.4 days and regularly aggregates up to 55mm (2.17") of precipitation.

When it does not snow in Naples?

In Naples, snow does not fall in March through December.

Does it snow in Naples in December?

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

How cold is the water in December in Naples?

In Naples, the average seawater temperature in December is 16.4°C (61.5°F). Swimming in 16.4°C (61.5°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface 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, Italy, is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Naples have in December?

In Naples, the average day length in December is 9h and 18min.

When is the sunrise / sunset in December in Naples?

In December, on the first day of the month, sunrise is at 07:08 and sunset at 16:35. On the last day of the month, in Naples, sunrise is at 07:27 and sunset at 16:45 CET.

How many hours of sunshine does Naples have in December?

In December, the average sunshine duration is 6.2h.

When is the lowest UV index in Naples?

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

How high is the UV index in December in Naples?

The average daily maximum UV index in December in Naples, Italy, is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

17.5°C 63.5°F

13.6°C 56.5°F

12.3°C 54.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.9km/h 8.6mph

14.1km/h 8.8mph

14.4km/h 8.9mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.4

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

13.1

14.9

12.6

Average UV index

Average cloud cover

Average visibility

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).

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).

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).

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%).

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).

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).

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).

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).

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).

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

Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in December: 6h and 1min

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).

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).

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).

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).

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).

December weather forecast
Naples, Italy

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