Weather in January
Temperature
Temperature records mark January as the coldest month, with highs averaging 10°C (50°F) and lows at 4°C (39.2°F).Rainfall
In January, the rain falls for 9 days. Throughout January, 115mm (4.53") of precipitation is accumulated. In Alonnisos, during the entire year, the rain falls for 79 days and collects up to 725mm (28.54") of precipitation.Sea temperature
January through March, with an average sea temperature of 14°C (57.2°F), are months with the coldest seawater in Alonnisos.Note: With an efficient thermal swimsuit, one can navigate 14°C (57.2°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 13°C (55.4°F) feels chilly.
Daylight
The average length of the day in January is 9h and 47min.On the first day of January, sunrise is at 07:43 and sunset at 17:12. On the last day of the month, sunrise is at 07:32 and sunset at 17:43 EET.
Sunshine
The months with the least sunshine 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 reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What are the coldest months in Alonnisos?
What is the temperature in January in Alonnisos?
How much does it rain in Alonnisos in January?
What months are the sea coldest in Alonnisos?
What is the sea water temperature in January in Alonnisos?
How many hours of daylight does Alonnisos have in January?
When is the sunrise / sunset in January in Alonnisos?
What is the month with the least sunshine in Alonnisos?
How many hours of sunshine does Alonnisos have in January?
What are the months with the lowest UV index in Alonnisos?
What is the UV index intensity in January in Alonnisos?
Average temperature in January
Alonnisos, Greece
- Average high temperature in January: 10°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 January: 4°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 January
Alonnisos, Greece
- Average rainfall in January: 115mm
The wettest month (with the highest rainfall) is December (119mm).
The driest month (with the least rainfall) is July (22mm).
Average rainfall days in January
Alonnisos, Greece
- Average rainfall days in January: 9 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 January
Alonnisos, Greece
- Average sea temperature in January: 14°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 January /
Average sunshine in January
Alonnisos, Greece
- Average daylight in January: 9h and 5min
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 January: 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 January
Alonnisos, Greece
- Average UV index in January: 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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