January weather forecast and climate
Alonnisos, Greece

Temperature

With an average high-temperature of 10°C (50°F) and an average low-temperature of 4°C (39.2°F), January is the coldest month.

Rainfall

In Alonnisos, Greece, in January, during 9 rainfall days, 115mm (4.5") of precipitation is typically accumulated. Throughout the year, there are 79 rainfall days, and 725mm (28.5") of precipitation is accumulated.

Sea temperature

January through March, with an average sea temperature of 14°C (57.2°F), are months with the coldest seawater. Swimming in 14°C (57.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Alonnisos, Greece, the average length of the day in January is 9.8h.

Sunshine

Months with the least sunshine are January and December, with an average of 4h of sunshine.

UV index

Months with the lowest UV index are January, November and December, with an average UV index of 2.

What is the coldest month in Alonnisos?

January is the coldest month, with an average high-temperature of 10°C (50°F) and an average low-temperature of 4°C (39.2°F).

What is the temperature in January in Alonnisos?

In Alonnisos, in January, the average high-temperature is 10°C (50°F), and the average low-temperature is 4°C (39.2°F).

How many days does it rain in January in Alonnisos?

In Alonnisos, Greece, in January, during 9 rainfall days, 115mm (4.5") of precipitation is typically accumulated.

What months are the sea coldest in Alonnisos?

January through March, with an average sea temperature of 14°C (57.2°F), are months with the coldest seawater in Alonnisos, Greece. At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How cold is the water in January in Alonnisos?

In Alonnisos, Greece, in January, the average water temperature is 14°C (57.2°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in January in Alonnisos?

In Alonnisos, Greece, the average length of the day in January is 9.8h.

What is the month with the least sunshine in Alonnisos?

Months with the least sunshine are January and December, with an average of 4h of sunshine.

How long on average sun shines in January in Alonnisos?

In January, the average sunshine in Alonnisos is 4h.

What are the months with the lowest UV index in Alonnisos?

Months with the lowest UV index in Alonnisos, Greece, are January, November and December, with an average UV index of 2.

What is the UV index intensity in January in Alonnisos?

In Alonnisos, Greece, the average UV index in January is 2.
Average temperature in January - Alonnisos, Greece
  • Average high temperature in January: 10°C

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

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 lowest 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).
Months with the lowest number of rainy days are July, August and September (3 days).

Average sea temperature in January - Alonnisos, Greece
  • Average sea temperature in January: 14°C

Best months for swimming (with the highest average sea temperature) are July and August (24°C).
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: 9.8h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 4h

The month with most sunshine is July (Average sunshine: 13h).
Months with least sunshine are January and December (Average sunshine: 4).

Average UV index in January - Alonnisos, Greece
  • Average UV index in January: 2

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).

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