September weather forecast
Rethimno, Greece

The first month of the autumn, September, is still a warm month in Rethimno, Greece, with an average temperature fluctuating between 27°C (80.6°F) and 19°C (66.2°F).
An excellent water temperature of 25.4°C (77.7°F) and only 1 rainfall days, with 19mm (0.75") of accumulated rainfall, makes September a prime for swimming and other water activities.

Temperature

As Rethimno, Greece, welcomes September, the average high-temperature is noted at a still warm 27°C (80.6°F), closely aligning with the preceding month. Rethimno's average low-temperature in September is measured at an enjoyable 19°C (66.2°F).

Rainfall

In September, in Rethimno, Greece, the rain falls for 1 days. Throughout September, 19mm (0.75") of precipitation is accumulated. In Rethimno, during the entire year, the rain falls for 67 days and collects up to 664mm (26.14") of precipitation.

Sea temperature

In Rethimno, in September, the average water temperature is 25.4°C (77.7°F).
Note: For activities such as swimming and diving, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

In Rethimno, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 06:54 and sunset at 19:49. On the last day of September, in Rethimno, sunrise is at 07:16 and sunset at 19:07 EEST.

Sunshine

The average sunshine in September is 10h.

UV index

The average daily maximum UV index in September in Rethimno is 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a regular UV index of 7 translates into these guidelines:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.