August 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 August

The last month of the summer, August, is another hot month in Athens, Greece, with average temperature varying between 31°C (87.8°F) and 23.8°C (74.8°F).
The perfect water temperature of 26.3°C (79.3°F) with 4mm (0.16") of accumulated rainfall and only 1.8 rainfall days, makes August a great period for swimming and other water activities.

Temperature

With an average high-temperature of 31°C (87.8°F) and an average low-temperature of 23.8°C (74.8°F), August is the warmest month in Athens.

Heat index

The average heat index is evaluated at a hot 32.6°C (90.7°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

With an average relative humidity of 50%, August is the least humid month.

Rainfall

August is the month with the least rainfall. Rain falls for 1.8 days and accumulates 4mm (0.16") of precipitation.

Snowfall

In Athens snow does not fall in April through December.

Sea temperature

August is the month with the warmest seawater in Athens, with an average sea temperature of 26.3°C (79.3°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In August, the average length of the day in Athens is 13.6h.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine in Athens.

UV index

Months with the highest UV index in Athens are June through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in August interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the warmest month in Athens?

August is the warmest month in Athens, Greece, with an average high-temperature of 31°C (87.8°F) and an average low-temperature of 23.8°C (74.8°F).

What is the temperature in August in Athens?

In August, in Athens, Greece, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 23.8°C (74.8°F). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is evaluated at 32.6°C (90.7°F).

What is the least humid month in Athens?

The least humid month is August, with an average relative humidity of 50%.

What is the average humidity in August in Athens?

The average relative humidity in August in Athens, Greece, is 50%.

What is the driest month in Athens?

August is the month with the least rainfall in Athens, Greece. Rain falls for 1.8 days and accumulates 4mm (0.16") of precipitation.

How many days does it rain in August in Athens?

In Athens, Greece, in August, it is raining for 1.8 days, with typically 4mm (0.16") of accumulated precipitation.

When it does not snow in Athens?

April through December are months without snowfall in Athens, Greece.

What month is the sea warmest in Athens?

August is the month with the warmest seawater in Athens, with an average sea temperature of 26.3°C (79.3°F).

What is the sea water temperature in August in Athens?

In Athens, the average seawater temperature in August is 26.3°C (79.3°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Athens have in August?

In Athens, Greece, the average length of the day in August is 13.6h.

What are the months with the most sunshine in Athens?

July and August, with an average of 12h of sunshine, are months with the most sunshine in Athens, Greece.

How long on average sun shines in August in Athens?

In August, the average sunshine in Athens is 12h.

When is the highest UV index in Athens?

Months with the highest UV index in Athens are June through August, with an average maximum UV index of 7.

How high is the UV index in August in Athens?

In Athens, the average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in August
Athens, Greece

Average temperature in August - Athens, Greece
  • Average high temperature in August: 31°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 August: 23.8°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 August
Athens, Greece

Average pressure in August - Athens, Greece
  • Average pressure in August: 1012mbar

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 August
Athens, Greece

Average wind speed in August - Athens, Greece
  • Average wind speed in August: 16.3km/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 August
Athens, Greece

Average humidity in August - Athens, Greece
  • Average humidity in August: 50%

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 August
Athens, Greece

Average rainfall in August - Athens, Greece
  • Average rainfall in August: 4mm

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 August
Athens, Greece

Average rainfall days in August - Athens, Greece
  • Average rainfall days in August: 1.8 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 August
Athens, Greece

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

Average snowfall days in August - Athens, Greece
  • Average snowfall days in August: 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 August
Athens, Greece

Average sea temperature in August - Athens, Greece
  • Average sea temperature in August: 26.3°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 August /
Average sunshine in August
Athens, Greece

Average daylight in August / Average sunshine in August - Athens, Greece
  • Average daylight in August: 13.6h

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 August: 12h

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 August
Athens, Greece

Average sunshine days in August - Athens, Greece
  • Average sunshine days in August: 28.5 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 August
Athens, Greece

Average UV index in August - Athens, Greece
  • Average UV index in August: 7

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 August
Athens, Greece

Average cloud cover in August - Athens, Greece
  • Average cloud cover in August: 6

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 August
Athens, Greece

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