September weather forecast
Ano Symi, Greece

The first month of the autumn, September, is still a warm month in Ano Symi, Greece, with an average temperature fluctuating between 19°C (66.2°F) and 29°C (84.2°F).
The ideal sea water temperature of 25.6°C (78.1°F) and only 4 rainfall days, with 14mm (0.55") of accumulated rainfall, makes September the best time for swimming and other water activities.

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a hot 32°C (89.6°F) in August to a moderately hot 29°C (84.2°F). In September, Ano Symi experiences an average nighttime temperature of 19°C (66.2°F).

Rainfall

In Ano Symi, during September, the rain falls for 4 days and regularly aggregates up to 14mm (0.55") of precipitation. In Ano Symi, during the entire year, the rain falls for 93 days and collects up to 874mm (34.41") of precipitation.

Sea temperature

In Ano Symi, in September, the average water temperature is 25.6°C (78.1°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

In September, the average length of the day in Ano Symi is 12h and 25min.
On the first day of the month, sunrise is at 06:40 and sunset at 19:36. On the last day of September, sunrise is at 07:03 and sunset at 18:53 EEST.

Sunshine

In September, the average sunshine in Ano Symi is 11h.

UV index

In September, the average daily maximum UV index in Ano Symi, Greece, is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Warning! The Sun's UV rays intensify with reflections from sand and water.