Ios
Greece
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Ios, Greece

The first month of the winter, December, is also a moderate month in Ios, Greece, with temperature in the range of an average high of 15°C (59°F) and an average low of 10°C (50°F).

Temperature

In Ios, the average high-temperature slightly decreases, from an enjoyable 18°C (64.4°F) in November, to a mild 15°C (59°F). The average low-temperature, in December, is 10°C (50°F).

Rainfall

In Ios, during December, the rain falls for 12 days and regularly aggregates up to 96mm (3.8") of precipitation. Throughout the year, in Ios, there are 70 rainfall days, and 503mm (19.8") of precipitation is accumulated.

Sea temperature

In Ios, the average water temperature is 17°C (62.6°F). Swimming in 17°C (62.6°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

With an average of 9.7h of daylight, December has the shortest days of the year.

Sunshine

January and December, with an average of 4h of sunshine, are months with the least sunshine in Ios.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
The average daily UV index of 2 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Ios?

In December, in Ios, Greece, the average high-temperature is 15°C (59°F), and the average low-temperature is 10°C (50°F).

How much does it rain in Ios in December?

In December, the rain falls for 12 days. Throughout December, 96mm (3.8") of precipitation is accumulated.

What is the sea temperature in December in Ios?

In Ios, Greece, in December, the average water temperature is 17°C (62.6°F). For most, swimming in 17°C (62.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the month with the shortest days in Ios?

The month with the shortest days in Ios is December, with an average of 9.7h of daylight.

What is the average length of the day in December in Ios?

In December, the average length of the day in Ios, Greece, is 9.7h.

What is the month with the least sunshine in Ios?

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

How long on average sun shines in December in Ios?

In December, the average sunshine in Ios, Greece, is 4h.

When is the lowest UV index in Ios?

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

How high is the UV index in December in Ios?

In December, the average daily maximum UV index in Ios is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Ios, Greece
  • Average high temperature in December: 15°C

The warmest month (with the highest average high temperature) is July (27°C).
Months with the lowest average high temperature are January and February (13°C).

  • Average low temperature in December: 10°C

Months with the highest average low temperature are July and August (21°C).
Coldest months (with the lowest average low temperature) are January and February (8°C).

Average rainfall in December - Ios, Greece
  • Average rainfall in December: 96mm

The wettest month (with the highest rainfall) is January (99mm).
Driest months (with the lowest rainfall) are July and August (2mm).

Average rainfall days in December - Ios, Greece
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is December (12 days).
The month with the lowest number of rainy days is August (0 days).

Average sea temperature in December - Ios, Greece
  • Average sea temperature in December: 17°C

The best month for swimming (with the highest average sea temperature) is August (24°C).
Coldest months (with the lowest average sea temperature) are February and March (15°C).

Average daylight in December / Average sunshine in December - Ios, Greece
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 4h

The month with most sunshine is July (Average sunshine: 14h).
Months with least sunshine are January and December (Average sunshine: 4).

Average UV index in December - Ios, Greece
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January and December (UV index 2).