September weather forecast
Rethimno, Greece

Dusk in the Venetian Rethimno harbor in Greece
Dusk in the Venetian Rethimno harbor in Greece

Weather in September

The first month of the autumn, September, is still a warm month in Rethimno, Greece, with an average temperature ranging between max 27°C (80.6°F) and min 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

In September, the average high-temperature is relatively the same as in August - a still warm 27°C (80.6°F). In Rethimno, in September, the average low-temperature is 19°C (66.2°F).

Rainfall

In Rethimno, in September, it is raining for 1 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, in Rethimno, there are 67 rainfall days, and 664mm (26.14") of precipitation is accumulated.

Sea temperature

In Rethimno, the average water temperature is 25.4°C (77.7°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

The average length of the day in September in Rethimno is 12h and 24min.
On the first day of September in Rethimno, sunrise is at 06:54 and sunset at 19:49. On the last day of the month, sunrise is at 07:16 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 threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
[Resources]

FAQ

How many days does it rain in September in Rethimno?

In Rethimno, during September, the rain falls for 1 days and regularly aggregates up to 19mm (0.75") of precipitation.

What is the sea water temperature in September in Rethimno?

In September, the average sea temperature in Rethimno is 25.4°C (77.7°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September in Rethimno?

In Rethimno, Greece, the average day length in September is 12h and 24min.

When is the sunrise / sunset in September in Rethimno?

In September, on the first day of the month, sunrise is at 06:54 and sunset at 19:49. On the last day of the month, in Rethimno, sunrise is at 07:16 and sunset at 19:08 EEST.

How many hours of sunshine does Rethimno have in September?

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

How high is the UV index in September in Rethimno?

In September, the average daily maximum UV index in Rethimno is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Rethimno, Greece

Average temperature in September - Rethimno, Greece
  • Average high temperature in September: 27°C

The warmest month (with the highest average high temperature) is July (30°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in September: 19°C

The months with the highest average low temperature are July and August (21°C).
The coldest months (with the lowest average low temperature) are January and February (8°C).

[Resources]

Average rainfall in September
Rethimno, Greece

Average rainfall in September - Rethimno, Greece
  • Average rainfall in September: 19mm

The wettest month (with the highest rainfall) is January (142mm).
The driest months (with the least rainfall) are July and August (1mm).

[Resources]

Average rainfall days in September
Rethimno, Greece

Average rainfall days in September - Rethimno, Greece
  • Average rainfall days in September: 1 days

The month with the highest number of rainy days is December (13 days).
The months with the least rainy days are July and August (0 days).

[Resources]

Average sea temperature in September
Rethimno, Greece

Average sea temperature in September - Rethimno, Greece
  • Average sea temperature in September: 25.4°C

The best month for swimming (with the highest average sea temperature) is August (25.9°C).
The coldest month (with the lowest average sea temperature) is February (16.1°C).

[Resources]

Average daylight in September /
Average sunshine in September
Rethimno, Greece

Average daylight in September / Average sunshine in September - Rethimno, Greece
  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 31min).
The month with the shortest days is December (Average daylight: 9h and 49min).

  • Average sunshine in September: 10h

The months with the most sunshine are June, July and August (Average sunshine: 12h).
The months with the least sunshine are January and December (Average sunshine: 4h).

[Resources]

Average UV index in September
Rethimno, Greece

Average UV index in September - Rethimno, Greece
  • Average UV index in September: 7

The months with the highest UV index are June and July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location