December weather forecastSperlonga, Italy

December

Weather in December

The first month of the winter, December, is still a cool month in Sperlonga, Italy, with an average temperature ranging between min 8.4°C (47.1°F) and max 12.9°C (55.2°F).

Temperature

Sperlonga in December experiences a gentle temperature dip, with average high-temperatures reducing from a comfortable 16.5°C (61.7°F) in November to a cool 12.9°C (55.2°F). Nighttime temperatures in Sperlonga record an average of 8.4°C (47.1°F) throughout December.

Humidity

In December, the average relative humidity is 73%.

Rainfall

In Sperlonga, in December, it is raining for 13.1 days, with typically 55mm (2.17") of accumulated precipitation. In Sperlonga, during the entire year, the rain falls for 135.6 days and collects up to 569mm (22.4") of precipitation.

Snowfall

March through December are months without snowfall.

Sea temperature

In Sperlonga, the average seawater temperature in December is 16.3°C (61.3°F).
Note: In 16.3°C (61.3°F), swimming is not an enjoyable activity for most. As the temperature decreases from 21°C (69.8°F) to 15°C (59°F), it becomes harder to control breathing.

Daylight

December has the shortest days of the year in Sperlonga, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 07:12 and sunset at 16:38. On the last day of December, sunrise is at 07:31 and sunset at 16:47 CET.

Sunshine

The average sunshine in December in Sperlonga, Italy, is 6.2h.

UV index

The months with the lowest UV index in Sperlonga are January, February and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 3 suggests this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Updated: Jan 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in December, in Sperlonga, is 12.9°C (55.2°F), while the average low-temperature is 8.4°C (47.1°F). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 31°C (87.8°F).

In Sperlonga, the average relative humidity in December is 73%.

In December, the rain falls for 13.1 days. Throughout December, 55mm (2.17") of precipitation is accumulated.

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

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

In December, the average sea temperature in Sperlonga, Italy, is 16.3°C (61.3°F). For most, swimming in 16.3°C (61.3°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).

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

The average day length in December in Sperlonga, Italy, is 9h and 16min.

On the first day of December, sunrise is at 07:12 and sunset at 16:38. On the last day of the month, sunrise is at 07:31 and sunset at 16:47 CET.

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

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

The average daily maximum UV index in December in Sperlonga is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

16.5°C

12.9°C

11.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.9km/h

13.4km/h

13.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

13.1

Average snowfall days

0.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

13.5

15.5

13.7

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Sperlonga, Italy

Average high temperature in December: 12.9°C

The warmest month (with the highest average high temperature) is August (28.7°C).
The month with the lowest average high temperature is January (11.6°C).

Average low temperature in December: 8.4°C

The month with the highest average low temperature is August (21.6°C).
The coldest month (with the lowest average low temperature) is February (7°C).

Average pressure in December
Sperlonga, Italy

Average pressure in December: 1018.5mbar

The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014.1mbar).

Average wind speed in December
Sperlonga, Italy

Average wind speed in December: 12.2km/h

The windiest month (with the highest average wind speed) is February (13km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).

Average humidity in December
Sperlonga, Italy

Average humidity in December: 73%

The months with the highest relative humidity are January and November (75%).
The month with the lowest relative humidity is August (63%).

Average rainfall in December
Sperlonga, Italy

Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is November (120mm).
The driest month (with the least rainfall) is August (10mm).

Average rainfall days in December
Sperlonga, Italy

Average rainfall days in December: 13.1 days

The months with the highest number of rainy days are January and November (15 days).
The month with the least rainy days is August (4.2 days).

Average snowfall days in December
Sperlonga, Italy

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.3 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
Sperlonga, Italy

Average sea temperature in December: 16.3°C

The best month for swimming (with the highest average sea temperature) is August (25.4°C).
The coldest month (with the lowest average sea temperature) is February (13.9°C).

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

Average daylight in December: 9h and 18min

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 12min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).

Average sunshine days in December
Sperlonga, Italy

Average sunshine days in December: 15.5 days

The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is February (12.3 days).

Average UV index in December
Sperlonga, 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
Sperlonga, Italy

Average cloud cover in December: 31

The month with the most cloud cover is January (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in December
Sperlonga, 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).