September weather forecastPosidi, Greece
September
Weather in September
The first month of the autumn, September, is still a warm month in Posidi, Greece, with temperature in the range of an average low of 15°C (59°F) and an average high of 26°C (78.8°F).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a hot 30°C (86°F) in August to a moderately hot 26°C (78.8°F). An average low-temperature of 15°C (59°F) is observed during the September nights.Rainfall
In Posidi, in September, during 4 rainfall days, 35mm (1.38") of precipitation is typically accumulated. In Posidi, Greece, during the entire year, the rain falls for 84 days and collects up to 553mm (21.77") of precipitation.Sea temperature
In Posidi, in September, the average water temperature is 23°C (73.4°F).Note: 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 Posidi, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 06:54 and sunset at 19:57. On the last day of September, sunrise is at 07:22 and sunset at 19:10 EEST.
Sunshine
In September, the average sunshine is 9h.UV index
In Posidi, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Posidi, Greece
- Average high temperature in September: 26°C
The 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
The 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 least rainfall) is July (24mm).
Average rainfall days in September
Posidi, Greece
- Average rainfall days in September: 4 days
The months with the highest number of rainy days are January, November and December (9 days).
The months with the least rainy days are July, August and September (4 days).
Average sea temperature in September
Posidi, Greece
- Average sea temperature in September: 23°C
The best months for swimming (with the highest average sea temperature) are July and August (24°C).
The 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: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h
The month with the most sunshine is July (Average sunshine: 12h).
The months with the least sunshine are January, February, November and December (Average sunshine: 4h).
Average UV index in September
Posidi, Greece
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January, November and December (UV index 2).
