Climate and monthly weather forecast
Alonnisos, Greece

Climate and monthly weather forecast

Weather in January

January, the same as December, is a cool winter month in Alonnisos, Greece, with an average temperature fluctuating between 10°C (50°F) and 4°C (39.2°F). Alonnisos's coldest temperatures are experienced in January, with average high temperatures of 10°C (50°F) and lows of 4°C (39.2°F). Weather in January »

Weather in February

The last month of the winter, February, is also a fresh month in Alonnisos, Greece, with temperature in the range of an average low of 5°C (41°F) and an average high of 11°C (51.8°F). At the onset of February, Alonnisos records an average high-temperature of a still cool 11°C (51.8°F), showing little deviation from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Alonnisos, is a mild month, with an average temperature varying between 13°C (55.4°F) and 6°C (42.8°F). The advent of March reveals an average high-temperature of a refreshing 13°C (55.4°F), showing minimal difference from the prior month. Weather in March »

Weather in April

April is an enjoyable spring month in Alonnisos, Greece, with temperature in the range of an average low of 9°C (48.2°F) and an average high of 17°C (62.6°F). Alonnisos's transition into April sees a mild rise in the average high-temperature, edging from a mild 13°C (55.4°F) in March to a comfortable 17°C (62.6°F). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Alonnisos, Greece, with an average temperature fluctuating between 22°C (71.6°F) and 13°C (55.4°F). The shift from April to May is marked by an increase in the average high-temperature, moving from a comfortable 17°C (62.6°F) to a pleasant 22°C (71.6°F). Weather in May »

Weather in June

June, the first month of the summer in Alonnisos, is a warm month, with an average temperature varying between 26°C (78.8°F) and 17°C (62.6°F). The embrace of June brings a minor uplift in the average high-temperature, shifting from a pleasant 22°C (71.6°F) in May to a warm 26°C (78.8°F). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Alonnisos, Greece, with an average temperature ranging between max 28°C (82.4°F) and min 19°C (66.2°F). Alonnisos sees its peak of temperatures during July and August, with an average high-temperature of 28°C (82.4°F). The month with the least rainfall is July, when the rain falls for 3 days and typically collects 22mm (0.87") of precipitation. Weather in July »

Weather in August

August, the last month of the summer in Alonnisos, is also a moderately hot month, with temperature in the range of an average high of 28°C (82.4°F) and an average low of 19°C (66.2°F). Alonnisos's temperatures tend to hit their maximum during July and August, with an average high-temperature of 28°C (82.4°F). In Alonnisos, Greece, during August, the rain falls for 3 days and regularly aggregates up to 29mm (1.14") of precipitation. Weather in August »

Weather in September

September, the first month of the autumn in Alonnisos, is also a moderately hot month, with an average temperature ranging between max 25°C (77°F) and min 16°C (60.8°F). September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 28°C (82.4°F) in August to a still warm 25°C (77°F). Weather in September »

Weather in October

October, the same as September, in Alonnisos, Greece, is another pleasant autumn month, with an average temperature varying between 20°C (68°F) and 13°C (55.4°F). As September transitions to October, the average high-temperature falls from a warm 25°C (77°F) to an agreeable 20°C (68°F). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Alonnisos, Greece, with an average temperature varying between 9°C (48.2°F) and 16°C (60.8°F). The advent of November brings a subtle shift in temperature, with the average high moving from an agreeable 20°C (68°F) in October to an enjoyable 16°C (60.8°F). Weather in November »

Weather in December

The first month of the winter, December, is still a refreshing month in Alonnisos, Greece, with temperature in the range of an average high of 13°C (55.4°F) and an average low of 6°C (42.8°F). Transition into December subtly marks a drop in the average high-temperature, moderately moving from an enjoyable 16°C (60.8°F) in November to a moderate 13°C (55.4°F). Weather in December »

Frequently asked questions

What part of the year is the coldest?
In Alonnisos, January registers the lowest temperatures, averaging 10°C (50°F) at the peak and 4°C (39.2°F) at the lowest.
How many days does it rain?
In Alonnisos, during the entire year, the rain falls for 79 days and collects up to 725mm (28.54") of precipitation.
What months are the sea coldest?
January through March, with an average sea temperature of 14°C (57.2°F), are months with the coldest seawater.
What is the month with the least sunshine?
January and December, with an average of 4h of sunshine, are months with the least sunshine.
What are the months with the lowest UV index?
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
When are the longest days?
June has the longest days of the year, with an average of 14h and 54min of daylight.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 9, are months with the highest UV index.
What are the warmest months?
Peak temperatures are observed in July and August, averaging a high-temperature of 28°C (82.4°F).
What is the driest month?
July is the month with the least rainfall. Rain falls for 3 days and accumulates 22mm (0.87") of precipitation.
What are the months with the warmest sea water?
July and August, with an average sea temperature of 24°C (75.2°F), are months with the warmest seawater in Alonnisos.
What month has the most sunshine?
With an average of 13h of sunshine, July has the most sunshine of the year.
When is Daylight Saving Time (DST)?
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, and the time zone changes from EEST to EET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 03:00, and the time zone reverts from EET to EEST.
What is the wettest month?
December is the month with the most rainfall. Rain falls for 10 days and accumulates 119mm (4.69") of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average rainfall - Alonnisos, Greece
Average rainfall
Alonnisos, Greece

The wettest month (with the highest rainfall) is December (119mm).
The driest month (with the least rainfall) is July (22mm).

Average rainfall days - Alonnisos, Greece
Average rainfall days
Alonnisos, Greece

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 - Alonnisos, Greece
Average sea temperature
Alonnisos, Greece

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 / Average sunshine - Alonnisos, Greece
Average daylight / Average sunshine
Alonnisos, Greece

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).

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 - Alonnisos, Greece
Average UV index
Alonnisos, Greece

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).

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