September weather forecast
Corfu, Greece

The first month of the autumn, September, is still a warm month in Corfu, Greece, with an 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 warm 27.6°C (81.7°F). The average low-temperature, in September, is 16.5°C (61.7°F).

Heat index

The average heat index in September is computed to be a tropical 30°C (86°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, pregnancy, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 70.4%.

Rainfall

In Corfu, it is raining for 7 days, with typically 81mm (3.19") of accumulated precipitation. Throughout the year, in Corfu, there are 128.7 rainfall days, and 1097mm (43.19") of precipitation is accumulated.

Sea temperature

In Corfu, in September, the average water temperature is 25.3°C (77.5°F).
Note: 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

The average length of the day in September in Corfu is 12h and 27min.
On the first day of the month, sunrise is at 07:08 and sunset at 20:12. On the last day of September, sunrise is at 07:35 and sunset at 19:25 EEST.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Corfu, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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 reflection of water and sand dramatically increases exposure to the UV rays.