Rethimno
Greece
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Rethimno, Greece

Dusk in the Venetian Rethimno harbor in Greece, with calm waters and heavily cloudy skies
Dusk in the Venetian Rethimno harbor in Greece, with calm waters and heavily cloudy skies
September, the first month of the autumn, in Rethimno, is still a warm month, with average temperature ranging between min 19°C (66.2°F) and max 27°C (80.6°F).

Temperature

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

Rainfall

In Rethimno, during 1 rainfall days, 19mm (0.7") of precipitation is typically accumulated. In Rethimno, during the entire year, the rain falls for 67 days and collects up to 664mm (26.1") of precipitation.

Sea temperature

In Rethimno, Greece, in September, the average water temperature 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.

Daylight

The average length of the day in Rethimno is 12.4h.

Sunshine

The average sunshine in Rethimno is 10h.

UV index

The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for ordinary individuals.
In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Rethimno?

In September, in Rethimno, the average high-temperature is 27°C (80.6°F), and the average low-temperature is 19°C (66.2°F).

How much does it rain in Rethimno in September?

In Rethimno, Greece, in September, during 1 rainfall days, 19mm (0.7") of precipitation is typically accumulated.

What is the 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?

The average length of the day in September in Rethimno is 12.4h.

How many hours of sunshine does Rethimno have in September?

The average sunshine in September is 10h.

What is the UV index reading in September in Rethimno?

In September, the average daily maximum UV index in Rethimno, Greece, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.
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

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

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

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

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).
Months with the lowest number of rainy days are July and August (0 days).

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).

Average daylight in September / Average sunshine in September - Rethimno, Greece
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 10h

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

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

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