Posidi
Greece
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Posidi, Greece

The first month of the autumn, September, is still a warm month in Posidi, Greece, with average temperature ranging between max 26°C (78.8°F) and min 15°C (59°F).

Temperature

In Posidi, the average high-temperature in September slightly decreases, from a hot 30°C (86°F) in August, to a moderately hot 26°C (78.8°F). In September, the average low-temperature is 15°C (59°F).

Rainfall

In September, the rain falls for 4 days. Throughout September, 35mm (1.4") of precipitation is accumulated. Throughout the year, there are 84 rainfall days, and 553mm (21.8") of precipitation is accumulated.

Sea temperature

In Posidi, the average seawater temperature is 23°C (73.4°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23°C (73.4°F).

Daylight

The average length of the day in Posidi is 12.5h.

Sunshine

The average sunshine is 9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Posidi?

The average high-temperature, in September, in Posidi, Greece, is 26°C (78.8°F), while the average low-temperature is 15°C (59°F).

How many days does it rain in September in Posidi?

In Posidi, in September, during 4 rainfall days, 35mm (1.4") of precipitation is typically accumulated.

What is the water temperature in September in Posidi?

In Posidi, Greece, the average seawater temperature in September is 23°C (73.4°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23°C (73.4°F).

How many hours of daylight does Posidi have in September?

The average length of the day in September in Posidi, Greece, is 12.5h.

How many hours of sunshine does Posidi have in September?

In September, the average sunshine is 9h.

What is the UV index reading in September in Posidi?

The average daily maximum UV index in September 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 September - Posidi, Greece
  • Average high temperature in September: 26°C

Warmest months (with the highest average high temperature) are July and August (30°C).
The month with the lowest average high temperature is January (9°C).

  • Average low temperature in September: 15°C

Months with the highest average low temperature are July and August (18°C).
The coldest month (with the lowest average low temperature) is January (2°C).

Average rainfall in September - Posidi, Greece
  • Average rainfall in September: 35mm

The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the lowest rainfall) is July (24mm).

Average rainfall days in September - Posidi, Greece
  • Average rainfall days in September: 4 days

Months with the highest number of rainy days are January, November and December (9 days).
Months with the lowest number of rainy days are July, August and September (4 days).

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

Best months for swimming (with the highest average sea temperature) are July and August (24°C).
Coldest months (with the lowest average sea temperature) are January, February and March (14°C).

Average daylight in September / Average sunshine in September - Posidi, Greece
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9h

The month with most sunshine is July (Average sunshine: 12h).
Months with least sunshine are January, February, November and December (Average sunshine: 4).

Average UV index in September - Posidi, Greece
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).