Porto Cheli
Greece
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Porto Cheli, Greece

The first month of the autumn, September, is still a warm month in Porto Cheli, Greece, with average temperature varying between 28°C (82.4°F) and 17°C (62.6°F).

Temperature

In September, the average high-temperature slightly decreases, from a hot 31°C (87.8°F) in August, to a warm 28°C (82.4°F). In September, the average low-temperature is 17°C (62.6°F).

Rainfall

In September, the rain falls for 2 days. Throughout September, 14mm (0.6") of precipitation is accumulated. In Porto Cheli, during the entire year, the rain falls for 77 days and collects up to 549mm (21.6") of precipitation.

Sea temperature

In September, the average sea temperature is 25.4°C (77.7°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

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

Sunshine

The average sunshine is 10h.

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. 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 Porto Cheli?

The average high-temperature, in September, is 28°C (82.4°F), while the average low-temperature is 17°C (62.6°F).

How much does it rain in Porto Cheli in September?

In Porto Cheli, Greece, in September, during 2 rainfall days, 14mm (0.6") of precipitation is typically accumulated.

How warm is the water in September in Porto Cheli?

In Porto Cheli, the average seawater temperature in September is 25.4°C (77.7°F). 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.

What is the average length of the day in September in Porto Cheli?

In September, the average length of the day in Porto Cheli, Greece, is 12.4h.

How long on average sun shines in September in Porto Cheli?

The average sunshine in September is 10h.

What is the UV index intensity in September in Porto Cheli?

In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Porto Cheli, Greece
  • Average high temperature in September: 28°C

Warmest months (with the highest average high temperature) are July and August (31°C).
The month with the lowest average high temperature is January (12°C).

  • Average low temperature in September: 17°C

Months with the highest average low temperature are July and August (20°C).
The coldest month (with the lowest average low temperature) is January (5°C).

Average rainfall in September - Porto Cheli, Greece
  • Average rainfall in September: 14mm

The wettest month (with the highest rainfall) is December (104mm).
The driest month (with the lowest rainfall) is July (6mm).

Average rainfall days in September - Porto Cheli, Greece
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is December (11 days).
The month with the lowest number of rainy days is July (1 days).

Average sea temperature in September - Porto Cheli, Greece
  • Average sea temperature in September: 25.4°C

The best month for swimming (with the highest average sea temperature) is August (26.5°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).

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

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 10h

Months with most sunshine are July and August (Average sunshine: 12h).
Months with least sunshine are January and December (Average sunshine: 4).

Average UV index in September - Porto Cheli, Greece
  • Average UV index in September: 7

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).