May 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
Spring is really in full swing in May, so unsurprisingly, with the rising temperatures comes more visitors from overseas. May is the first month to show signs of the summer heat, with a high temperature of a very pleasant 24°C (75.2°F).
There is virtually no chance of rain in May, with 10 hours of average daily sunshine. The sea temperature continues to rise, yet still feels relatively cold at 19°C (66.2°F). Humidity levels at this time of year are at their lowest.

What is the temperature in May in Athens?

In May, in Athens, Greece, the average high-temperature is 25.2°C (77.4°F), and the average low-temperature is 15.8°C (60.4°F).

How much does it rain in Athens in May?

In Athens, Greece, in May, during 6.2 rainfall days, typically, 22.7mm (0.9") of precipitation is accumulated.

What is the sea 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).
Average temperature in May - Athens, Greece
  • Average high temperature in May: 25.2°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).

  • Average low temperature in May: 15.8°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).

Average humidity in May - Athens, Greece
  • Average humidity in May: 59.5%

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

Average rainfall in May - Athens, Greece
  • Average rainfall in May: 22.7mm

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

Average rainfall days in May - Athens, Greece
  • Average rainfall days in May: 6.2 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).

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).

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 shortest days is December (Average daylight: 9.6h).

  • Average sunshine in May: 9.8h

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

Average UV index in May - Athens, Greece
  • Average UV index in May: 8

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).

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