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 and 19°C.
An excellent water temperature of 25.4°C and only 1 rainfall days, with 19mm of accumulated rainfall, makes September a prime for swimming and other water activities.

Temperature

September's presence in Rethimno records an average high-temperature of a still moderately hot 27°C, closely mirroring August's climate. Rethimno throughout September, experiences an average nighttime temperature of 19°C.

Rainfall

In Rethimno, Greece, in September, it is raining for 1 days, with typically 19mm of accumulated precipitation. In Rethimno, during the entire year, the rain falls for 67 days and collects up to 664mm of precipitation.

Sea temperature

In Rethimno, in September, the average water temperature is 25.4°C.
Note: Surface water temperatures ranging from 25°C to 29°C are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

The average length of the day in September is 12h and 24min.
On the first day of September in Rethimno, sunrise is at 06:54 and sunset at 19:50. On the last day of the month, sunrise is at 07:15 and sunset at 19:08 EEST.

Sunshine

In Rethimno, the average sunshine in September is 10h.

UV index

In Rethimno, Greece, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be attentive! The UV exposure is heightened with reflections from sand and water.