May 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 May

May, the last month of the spring, in Athens, is a moderately hot month, with average temperature fluctuating between 16.4°C (61.5°F) and 23.8°C (74.8°F).

Temperature

In May, the average high-temperature marginally rises, from an enjoyable 19.2°C (66.6°F) in April, to a moderately hot 23.8°C (74.8°F). In Athens, in May, the average low-temperature is 16.4°C (61.5°F).

Humidity

The average relative humidity is 58%.

Rainfall

In Athens, it is raining for 9.3 days, with typically 20mm (0.79") of accumulated precipitation. Throughout the year, in Athens, there are 98.9 rainfall days, and 348mm (13.7") of precipitation is accumulated.

Snowfall

April through December are months without snowfall.

Sea temperature

In May, the average sea temperature in Athens is 18.5°C (65.3°F).
Note: For most, swimming in 18.5°C (65.3°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).

Daylight

In Athens, the average length of the day in May is 14.2h.

Sunshine

In May, the average sunshine is 11.3h.

UV index

In Athens, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

What is the average humidity in May in Athens?

In May, the average relative humidity in Athens is 58%.

How many days does it rain in May in Athens?

In May, the rain falls for 9.3 days. Throughout May, 20mm (0.79") of precipitation is accumulated.

When it does not snow in Athens?

In Athens snow does not fall in April through December.

What is the sea water temperature in May in Athens?

In Athens, in May, the average water temperature is 18.5°C (65.3°F). For most, swimming in 18.5°C (65.3°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).

How many hours of daylight does Athens have in May?

In Athens, Greece, the average length of the day in May is 14.2h.

How many hours of sunshine does Athens have in May?

In May, the average sunshine in Athens is 11.3h.

What is the UV index intensity in May in Athens?

The average daily maximum UV index in May in Athens, Greece, is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.

Average temperature in May
Athens, Greece

Average temperature in May - Athens, Greece
  • Average high temperature in May: 23.8°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 May: 16.4°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 May
Athens, Greece

Average pressure in May - Athens, Greece
  • Average pressure in May: 1013mbar

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 May
Athens, Greece

Average wind speed in May - Athens, Greece
  • Average wind speed in May: 11.6km/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 May
Athens, Greece

Average humidity in May - Athens, Greece
  • Average humidity in May: 58%

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 May
Athens, Greece

Average rainfall in May - Athens, Greece
  • Average rainfall in May: 20mm

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 May
Athens, Greece

Average rainfall days in May - Athens, Greece
  • Average rainfall days in May: 9.3 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 May
Athens, Greece

Average snowfall in May - Athens, Greece
  • Average snowfall in May: 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 May
Athens, Greece

Average snowfall days in May - Athens, Greece
  • Average snowfall days in May: 0 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 May
Athens, Greece

Average sea temperature in May - Athens, Greece
  • Average sea temperature in May: 18.5°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 May /
Average sunshine in May
Athens, Greece

Average daylight in May / Average sunshine in May - Athens, Greece
  • Average daylight in May: 14.2h

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 May: 11.3h

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 May
Athens, Greece

Average sunshine days in May - Athens, Greece
  • Average sunshine days in May: 20.4 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 May
Athens, Greece

Average UV index in May - Athens, Greece
  • Average UV index in May: 6

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 May
Athens, Greece

Average cloud cover in May - Athens, Greece
  • Average cloud cover in May: 19

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 May
Athens, Greece

Average visibility in May - Athens, Greece
  • Average visibility in May: 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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