Athens
Greece
Long-term weather forecast
Long-term weather forecast
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April weather forecast and Climate
Athens, Greece

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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
April brings warm, spring temperatures, with an average of 15°C (59°F). With mostly sunny days and very little chance of rain, April is when Athens start to see a slight increase in the number of visitors, as people are searching for warmer European temperatures.
The rising temperatures finally start to warm up the sea, although it still feels initially cold, and is often too cold to stay in for extended periods. On average, there are two days of either fog or snow in April, but it would be sporadic to see this on a trip at this time of year.
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  • The average high temperature in April: 20°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).

  • The average low temperature in April: 11.7°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).

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  • The average humidity in April: 62.9%

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

  • The average rainfall in April: 30.8mm

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

  • The average rainfall days in April: 8.1 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).

  • The average sea temperature in April: 15.8°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).

  • The average daylight in April: 13h

The month with the longest days is June (Average daylight: 15h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in April: 7.5h

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

  • The average UV index in April: 6

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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