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 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
With the onset of December, Portici's average high-temperature slightly adjusts, moderately receding from November's comfortable 17.5°C (63.5°F) to a mild 13.6°C (56.5°F). The month of December is marked by an average minimum temperature of 9.1°C (48.4°F), slightly cooler than its daytime counterpart.Humidity
In December, the average relative humidity is 71%.Rainfall
In Portici, during December, the rain falls for 13.4 days and regularly aggregates up to 55mm (2.17") of precipitation. In Portici, Italy, 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 Portici, the average seawater temperature in December is 16.4°C (61.5°F).Note: Swimming is not a pleasurable activity for most people when the water temperature is 16.4°C (61.5°F). Breathing control gets harder as the water temperature drops 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 the month, sunrise is at 07:07 and sunset at 16:35. On the last day of December, in Portici, Italy, sunrise is at 07:26 and sunset at 16:44 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 Portici. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Avoiding the Sun during its peak radiation time around midday is a healthy practice. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What are the temperatures in Portici in December?
What is the average humidity in December in Portici?
How many days does it rain in December in Portici?
When it does not snow in Portici?
Does it snow in Portici in December?
What is the sea temperature in December in Portici?
What is the month with the shortest days in Portici?
How many hours of daylight does Portici have in December?
When is the sunrise / sunset in December in Portici?
How long on average sun shines in December in Portici?
What is the month with the lowest UV index in Portici?
What is the UV index intensity in December in Portici?
Average temperature in December
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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
Portici, 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).
Portici, Italy
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