Weather in Athens in May

Daylight on the 15th: 14 h 14 min
Average high: 25 °C (77 °F)
Average low: 16 °C (60 °F)
Precipitation: 21 mm

In May, the area around Athens averages daytime highs of 25 °C (77 °F) and night-time lows of 16 °C (60 °F). Days are warm enough for light clothing.

Temperature

Compared with April, May is warmer by 5 °C in daytime highs, and June is warmer by 5 °C than May. The daily average is 20 °C (68 °F).

Precipitation, humidity and wind

Precipitation averages about 21 mm over the month, with 5 days of at least 1 mm. Precipitation is rare in this month.

Relative humidity averages 63 % and wind at 2 m about 2.7 m/s.

Daylight

On 15 May the sun rises at 06:15 and sets at 20:28 local time, for 14 h 14 min of daylight, 62 minutes more 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 May?

Average highs of 25 °C (77 °F) and lows of 16 °C (60 °F) (2011-2020 averages).

Does it rain a lot in Athens in May?

About 21 mm over the month, on 5 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)