September weather forecast and climate
Acherounes, Greece

September, the first month of the autumn, in Acherounes, is still a warm month, with average temperature varying between 18°C (64.4°F) and 24°C (75.2°F).

Temperature

In September, the average high-temperature is 24°C (75.2°F), and the average low-temperature is 18°C (64.4°F).

Rainfall

In Acherounes, Greece, during September, the rain falls for 3 days and regularly aggregates up to 29mm (1.1") of precipitation. Throughout the year, there are 73 rainfall days, and 567mm (22.3") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature in Acherounes is 23°C (73.4°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23°C (73.4°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

In September, the average length of the day is 12.4h.

Sunshine

In Acherounes, the average sunshine is 10h.

UV index

In September, the average UV index is 6.

What is the temperature in September in Acherounes?

In September, in Acherounes, Greece, the average high-temperature is 24°C (75.2°F), and the average low-temperature is 18°C (64.4°F).

How many days does it rain in September in Acherounes?

In Acherounes, Greece, during September, the rain falls for 3 days and regularly aggregates up to 29mm (1.1") of precipitation.

How warm is the water in September in Acherounes?

In Acherounes, in September, the average water temperature is 23°C (73.4°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23°C (73.4°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

What is the average length of the day in September in Acherounes?

In September, the average length of the day in Acherounes is 12.4h.

How many hours of sunshine does Acherounes have in September?

The average sunshine in September is 10h.

What is the UV index intensity in September in Acherounes?

In Acherounes, Greece, the average UV index in September is 6.
Average temperature in September - Acherounes, Greece
  • Average high temperature in September: 24°C

Warmest months (with the highest average high temperature) are July and August (27°C).
The month with the lowest average high temperature is January (11°C).

  • Average low temperature in September: 18°C

Months with the highest average low temperature are July and August (21°C).
The coldest month (with the lowest average low temperature) is January (6°C).

Average rainfall in September - Acherounes, Greece
  • Average rainfall in September: 29mm

Wettest months (with the highest rainfall) are January and December (98mm).
The driest month (with the lowest rainfall) is July (11mm).

Average rainfall days in September - Acherounes, Greece
  • Average rainfall days in September: 3 days

The month with the highest number of rainy days is December (10 days).
Months with the lowest number of rainy days are June, July, August and September (3 days).

Average sea temperature in September - Acherounes, Greece
  • Average sea temperature in September: 23°C

The best month for swimming (with the highest average sea temperature) is August (24°C).
Coldest months (with the lowest average sea temperature) are February and March (14°C).

Average daylight in September / Average sunshine in September - Acherounes, Greece
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 10h

The month with most sunshine is July (Average sunshine: 13h).
Months with least sunshine are January and December (Average sunshine: 4).

Average UV index in September - Acherounes, Greece
  • Average UV index in September: 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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