Long-term weather forecast
Long-term weather forecast

December weather forecast and Climate
Athens, Greece

The ancient city of Athens in Greece with a view of the Parthenon Temple at dusk
The ancient city of Athens in Greece with a view of the Parthenon Temple at dusk
As expected, December is one of the coldest months in Greece's capital, yet compared to many other European countries is still relatively mild, making it a good place for a little winter sun.
The average temperature in December is 12°C (53.6°F), with a few fair, cloudy days accompanying the colder temperatures. Towards the end of the month, although temperatures drop further, the skies brighten slightly,
December on average sees 11 days of rainfall, making it the month when it is most likely to see some rain. The sea temperature is at 17°C (62.6°F) - only a very few ventures into the water at this time of year. Although the humidity levels are the highest of the year (75%), this is barely noticeable with the cooler temperatures.
  • The average high temperature in December: 14.7°C

The warmest month (with the highest average high temperature) is August (33.7°C).
The month with the lowest average high temperature is January (13.3°C).

  • The average low temperature in December: 8.8°C

The month with the highest average low temperature is August (23.8°C).
Coldest months (with the lowest average low temperature) are January and February (6.8°C).

  • The average humidity in December: 71.8%

The month with the highest relative humidity is November (71.9%).
The month with the lowest relative humidity is August (47.6%).

  • The average rainfall in December: 69.1mm

The wettest month (with the highest rainfall) is December (69.1mm).
The driest month (with the lowest rainfall) is July (5.8mm).

  • The average rainfall days in December: 12.1 days

The month with the highest number of rainy days is January (12.6 days).
The month with the lowest number of rainy days is August (1.7 days).

  • The 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).

  • The average daylight in December: 10h

The month with the longest days is June (Average daylight: 15h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in December: 3.4h

The month with most sunshine is July (Average sunshine: 12.4h).
The month with least sunshine is December (Average sunshine: 3.4h).

  • The average UV index in December: 2

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