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
The onset of December aligns with a soft reduction in the average high-temperature, gently falling from a moderate 13°C (55.4°F) in November to a chilly 9.8°C (49.6°F). Portofino navigates through December with a barely noticeable decrease in temperature at night, stabilizing at a still frosty 6.5°C (43.7°F).Humidity
The average relative humidity in December in Portofino is 77%.Rainfall
In Portofino, during December, the rain falls for 12.4 days and regularly aggregates up to 67mm (2.64") of precipitation. Throughout the year, there are 173.6 rainfall days, and 780mm (30.71") of precipitation is accumulated.Snowfall
Months with snowfall in Portofino are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, there are 1.3 snowfall days, and 15mm (0.59") of snow is accumulated.Sea temperature
In December, the average sea temperature in Portofino is 15.3°C (59.5°F).Note: The majority of individuals find swimming in 15.3°C (59.5°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
December has the shortest days of the year in Portofino, with an average of 8h and 54min of daylight.On the first day of December in Portofino, Italy, sunrise is at 07:39 and sunset at 16:45. On the last day of the month, sunrise is at 07:58 and sunset at 16:53 CET.
Sunshine
The average sunshine in December is 5.5h.UV index
The average daily maximum UV index in December in Portofino is 3. 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: The UV index of 3 during December leads to these advisories:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What is the average December temperature in Portofino?
What is the average humidity in December in Portofino?
How much does it rain in Portofino in December?
When does it start to snow in Portofino?
What is the sea temperature in December in Portofino?
What is the month with the shortest days in Portofino?
What is the average length of the day in December in Portofino?
When is the sunrise / sunset in December in Portofino?
How long on average sun shines in December in Portofino?
What is the UV index reading in December in Portofino?
Average temperature in December
Portofino, Italy
- Average high temperature in December: 9.8°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in December: 6.5°C
The month with the highest average low temperature is August (19.3°C).
The coldest month (with the lowest average low temperature) is February (4.9°C).
Average pressure in December
Portofino, Italy
- Average pressure in December: 1018.7mbar
The month with the highest atmospheric pressure is December (1018.7mbar).
The months with the lowest atmospheric pressure are April, May and July (1013.9mbar).
Average wind speed in December
Portofino, Italy
- Average wind speed in December: 11km/h
The windiest month (with the highest average wind speed) is February (12.2km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).
Average humidity in December
Portofino, Italy
- Average humidity in December: 77%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is August (72%).
Average rainfall in December
Portofino, Italy
- Average rainfall in December: 67mm
The wettest month (with the highest rainfall) is November (118mm).
The driest month (with the least rainfall) is September (47mm).
Average rainfall days in December
Portofino, Italy
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in December
Portofino, Italy
- Average snowfall in December: 3mm
The month with the highest snowfall is March (6mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Portofino, Italy
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Portofino, Italy
- Average sea temperature in December: 15.3°C
The best month for swimming (with the highest average sea temperature) is August (24.4°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in December /
Average sunshine in December
Portofino, Italy
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 3min
The months with the most sunshine are June and July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in December
Portofino, Italy
- Average sunshine days in December: 15 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in December
Portofino, Italy
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Portofino, Italy
- Average cloud cover in December: 40
The month with the most cloud cover is November (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Portofino, Italy
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
Portofino, Italy
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