Weather in Athens in December

Daylight on the 15th: 9 h 33 min
Average high: 14 °C (57 °F)
Average low: 9 °C (47 °F)
Precipitation: 92 mm

In December, the area around Athens averages daytime highs of 14 °C (57 °F) and night-time lows of 9 °C (47 °F). Days are mild; a light jacket covers most of it.

Temperature

Compared with November, December is cooler by 4 °C in daytime highs, and January is cooler by 2 °C than December. The daily average is 11 °C (52 °F).

Precipitation, humidity and wind

Precipitation averages about 92 mm over the month, with 9 days of at least 1 mm. Expect some wet days, but not every day.

December is the wettest month of the year.

Relative humidity averages 79 % and wind at 2 m about 3.6 m/s.

Daylight

On 15 December the sun rises at 07:34 and sets at 17:07 local time, for 9 h 33 min of daylight, 35 minutes less than a month earlier.

About these numbers

The figures are 2011-2020 averages for the grid cell around Athens from the NASA POWER project, a model based data set. They describe the area rather than one weather station, and a single year can differ.

Month by month

Month	High	Low	Precipitation
January	12 °C	7 °C	65 mm
February	14 °C	7 °C	66 mm
March	16 °C	9 °C	62 mm
April	20 °C	11 °C	30 mm
May	25 °C	16 °C	21 mm
June	30 °C	20 °C	29 mm
July	33 °C	23 °C	11 mm
August	32 °C	23 °C	10 mm
September	29 °C	21 °C	29 mm
October	23 °C	16 °C	41 mm
November	18 °C	13 °C	61 mm
December	14 °C	9 °C	92 mm

Questions

How warm is Athens in December?

Average highs of 14 °C (57 °F) and lows of 9 °C (47 °F) (2011-2020 averages).

Does it rain a lot in Athens in December?

About 92 mm over the month, on 9 days with at least 1 mm.

Travel data for Greece

Sources

NASA Langley Research Center POWER Project, funded through the NASA Earth Science Directorate Applied Science Program (2026-09-22)
Computed from the city coordinates with the NOAA solar position equations
IANA tz database
Wikidata, CC0 (2026-09-22)