Weather in December
Temperature
December implies a soft temperature shift, with average high-temperatures reducing from November's refreshing 16°C (60.8°F) to a moderate 13°C (55.4°F). During December, Alonnisos experiences an average low-temperature of 6°C (42.8°F) at night.Rainfall
December is the month with the most rainfall. Rain falls for 10 days and accumulates 119mm (4.69") of precipitation.Sea temperature
In Alonnisos, the average seawater temperature in December is 15°C (59°F).Note: Swimming is not a pleasant activity for most when the water temperature is 15°C (59°F). As the water temperature drops from 21°C (69.8°F) to 15°C (59°F), breathing becomes more difficult to control.
Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December in Alonnisos, sunrise is at 07:25 and sunset at 17:02. On the last day of the month, sunrise is at 07:43 and sunset at 17:11 EET.
Sunshine
The months with the least sunshine in Alonnisos are January and December, with an average of 4h of sunshine.UV index
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What is the average December temperature in Alonnisos?
What is the wettest month in Alonnisos?
How many days does it rain in December in Alonnisos?
How cold is the water in December in Alonnisos?
What is the month with the shortest days in Alonnisos?
How many hours of daylight does Alonnisos have in December?
When is the sunrise / sunset in December in Alonnisos?
What are the months with the least sunshine in Alonnisos?
How long on average sun shines in December in Alonnisos?
When is the lowest UV index in Alonnisos?
What is the UV index reading in December in Alonnisos?
Average temperature in December
Alonnisos, Greece
- Average high temperature in December: 13°C
The warmest months (with the highest average high temperature) are July and August (28°C).
The month with the lowest average high temperature is January (10°C).
- Average low temperature in December: 6°C
The months with the highest average low temperature are July and August (19°C).
The coldest month (with the lowest average low temperature) is January (4°C).
Average rainfall in December
Alonnisos, Greece
- Average rainfall in December: 119mm
The wettest month (with the highest rainfall) is December (119mm).
The driest month (with the least rainfall) is July (22mm).
Average rainfall days in December
Alonnisos, Greece
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is December (10 days).
The months with the least rainy days are July, August and September (3 days).
Average sea temperature in December
Alonnisos, Greece
- Average sea temperature in December: 15°C
The best months for swimming (with the highest average sea temperature) are July and August (24°C).
The coldest months (with the lowest average sea temperature) are January, February and March (14°C).
Average daylight in December /
Average sunshine in December
Alonnisos, Greece
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h
The month with the most sunshine is July (Average sunshine: 13h).
The months with the least sunshine are January and December (Average sunshine: 4h).
Average UV index in December
Alonnisos, Greece
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January, November and December (UV index 2).
Alonnisos, Greece
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