Athens
Greece
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Athens, Greece

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

Temperature

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

Humidity

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

Rainfall

In May, the rain falls for 9.3 days. Throughout May, 20mm (0.79") of precipitation is accumulated. In Athens, during the entire year, the rain falls for 98.9 days and collects up to 348mm (13.7") of precipitation.

Snowfall

In Athens snow does not fall in April through December.

Sea temperature

In Athens, Greece, in May, the average water temperature is 18.5°C (65.3°F).
Note: Swimming in 18.5°C (65.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

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

Sunshine

The average sunshine in May is 11.3h.

UV index

In Athens, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Athens?

In May, the average high-temperature is 23.8°C (74.8°F), and the average low-temperature is 16.4°C (61.5°F).

What is the average humidity in May in Athens?

The average relative humidity in May in Athens, Greece, is 58%.

How much does it rain in Athens in May?

In Athens, during May, the rain falls for 9.3 days and regularly aggregates up to 20mm (0.79") of precipitation.

When it does not snow in Athens?

In Athens snow does not fall in April through December.

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 swimming, a surface water temperature of 18.5°C (65.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Athens have in May?

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

How many hours of sunshine does Athens have in May?

The average sunshine in May is 11.3h.

How high is the UV index in May in Athens?

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
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).

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%).

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).

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).

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).

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).

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 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).

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).