Contents
- 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 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
Weather in December
Temperature
December implies a soft temperature shift, with average high-temperatures reducing from November's comfortable 16.5°C (61.7°F) to a fresh 12.9°C (55.2°F). Formia's December nights demonstrate minimal variation from the daytime temperatures, with an average of 8.4°C (47.1°F).Humidity
The average relative humidity in December in Formia is 73%.Rainfall
In Formia, in December, it is raining for 13.1 days, with typically 55mm (2.17") of accumulated precipitation. In Formia, 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 in Formia.Sea temperature
In Formia, the average seawater temperature in December is 16.3°C (61.3°F).Note: The majority of individuals find it unpleasurable to swim in 16.3°C (61.3°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°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 in Formia, sunrise is at 07:12 and sunset at 16:37. On the last day of the month, sunrise is at 07:31 and sunset at 16:46 CET.
Sunshine
In Formia, 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 Formia, Italy. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What are December temperatures in Formia?
What is the average humidity in December in Formia?
How much does it rain in Formia in December?
When it does not snow in Formia?
Does it snow in Formia in December?
What is the sea temperature in December in Formia?
What is the month with the shortest days in Formia?
What is the average length of the day in December in Formia?
When are sunrise and sunset in December in Formia?
How many hours of sunshine does Formia have in December?
What are the months with the lowest UV index in Formia?
How high is the UV index in December in Formia?
Average temperature in December
Formia, 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
Formia, 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
Formia, 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
Formia, 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
Formia, 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
Formia, 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
Formia, 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
Formia, Italy
- Average sea temperature in December: 16.3°C
The best month for swimming (with the highest average sea temperature) is August (25.8°C).
The coldest month (with the lowest average sea temperature) is February (13.8°C).
Average daylight in December /
Average sunshine in December
Formia, 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 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in December
Formia, 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
Formia, 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
Formia, 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
Formia, 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).
Formia, Italy
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