December weather forecast and climate
Athens, Greece

The ancient city of Athens in Greece with a view of the Parthenon Temple
The ancient city of Athens in Greece with a view of the Parthenon Temple

Weather in December

December, the first month of the winter, in Athens, is also a moderate month, with average temperature varying between 13.8°C (56.8°F) and 9.3°C (48.7°F).

Temperature

In Athens, the average high-temperature in December slightly decreases, from a comfortable 18.1°C (64.6°F) in November, to a mild 13.8°C (56.8°F). In Athens, Greece, in December, the average low-temperature is 9.3°C (48.7°F).

Humidity

In Athens, the average relative humidity is 72%.

Rainfall

The month with the most rainfall is December when the rain falls for 11 days and typically aggregates up to 53mm (2.09") of precipitation.

Snowfall

April through December are months without snowfall in Athens.

Sea temperature

In December, the average sea temperature in Athens, Greece, is 16.6°C (61.9°F).
Note: For swimming, a surface water temperature of 16.6°C (61.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

The month with the shortest days in Athens is December, with an average of 9.6h of daylight.

Sunshine

In Athens, the average sunshine is 5.8h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Athens?

In Athens, Greece, the average relative humidity in December is 72%.

What is the rainiest month in Athens?

December is the month with the most rainfall in Athens. Rain falls for 11 days and accumulates 53mm (2.09") of precipitation.

How many days does it rain in December in Athens?

In Athens, during December, the rain falls for 11 days and regularly aggregates up to 53mm (2.09") of precipitation.

When it does not snow in Athens?

In Athens snow does not fall in April through December.

Does it snow in Athens in December?

In Athens, Greece, in December, it doesn't snow. In January, it regularly snows.

What is the sea water temperature in December in Athens?

In Athens, in December, the average water temperature is 16.6°C (61.9°F). Swimming in 16.6°C (61.9°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Athens?

December has the shortest days of the year in Athens, with an average of 9.6h of daylight.

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

In December, the average length of the day in Athens is 9.6h.

How long on average sun shines in December in Athens?

In Athens, Greece, the average sunshine in December is 5.8h.

When is the lowest UV index in Athens?

With an average maximum UV index of 2, December is the month with the lowest UV index in Athens.

What is the UV index reading in December in Athens?

The average daily maximum UV index in December in Athens is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Athens, Greece

Average temperature in December - Athens, Greece
  • Average high temperature in December: 13.8°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (12.1°C).

  • Average low temperature in December: 9.3°C

The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (7.3°C).

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Average pressure in December
Athens, Greece

Average pressure in December - Athens, Greece
  • Average pressure in December: 1018.2mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011.1mbar).

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Average wind speed in December
Athens, Greece

Average wind speed in December - Athens, Greece
  • Average wind speed in December: 14.5km/h

The windiest month (with the highest average wind speed) is August (16.3km/h).
The calmest month (with the lowest average wind speed) is May (11.6km/h).

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Average humidity in December
Athens, Greece

Average humidity in December - Athens, Greece
  • Average humidity in December: 72%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in December
Athens, Greece

Average rainfall in December - Athens, Greece
  • Average rainfall in December: 53mm

The wettest month (with the highest rainfall) is December (53mm).
The driest month (with the least rainfall) is August (4mm).

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Average rainfall days in December
Athens, Greece

Average rainfall days in December - Athens, Greece
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is January (11.3 days).
The month with the least rainy days is August (1.8 days).

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Average snowfall in December
Athens, Greece

Average snowfall in December - Athens, Greece
  • Average snowfall in December: 0mm

The month with the highest snowfall is January (9mm).
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in December
Athens, Greece

Average snowfall days in December - Athens, Greece
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is January (0.9 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in December
Athens, Greece

Average sea temperature in December - Athens, Greece
  • Average sea temperature in December: 16.6°C

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15°C).

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Average daylight in December /
Average sunshine in December
Athens, Greece

Average daylight in December / Average sunshine in December - Athens, Greece
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 5.8h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 5.6h).

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Average sunshine days in December
Athens, Greece

Average sunshine days in December - Athens, Greece
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is August (28.5 days).
The month with the least sunshine days is February (14.1 days).

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Average UV index in December
Athens, Greece

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

Months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in December
Athens, Greece

Average cloud cover in December - Athens, Greece
  • Average cloud cover in December: 36

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
Athens, Greece

Average visibility in December - Athens, Greece
  • Average visibility in December: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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