September weather forecast and climate
Corfu, Greece

September, the first month of the autumn, in Corfu, is still a warm month, with average temperature ranging between max 27.6°C (81.7°F) and min 16.5°C (61.7°F).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 31.3°C (88.3°F) in August, to a moderately hot 27.6°C (81.7°F). The average low-temperature, in September, is 16.5°C (61.7°F).

Heat index

In September, the average heat index is calculated to 30°C (86°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, metabolic differences, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Corfu is 70.4%.

Rainfall

In Corfu, in September, it is raining for 7 days, with typically 81.3mm (3.2") of accumulated precipitation. In Corfu, Greece, during the entire year, the rain falls for 128.7 days and collects up to 1097.3mm (43.2") of precipitation.

Sea temperature

In Corfu, the average seawater temperature is 25.3°C (77.5°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

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

Sunshine

In Corfu, the average sunshine in September is 8.6h.

UV index

In Corfu, Greece, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.