Skiathos
Greece
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Skiathos, Greece

Ships docked in the harbor of the stunning old town of Skiathos on Skiathos Island, Greece
Ships docked in the harbor of the stunning old town of Skiathos on Skiathos Island, Greece
September, the first month of the autumn, in Skiathos, is also a moderately hot month, with average temperature fluctuating between 26°C (78.8°F) and 15°C (59°F).

Temperature

In Skiathos, the average high-temperature marginally drops, from 29°C (84.2°F) in August, to a still moderately hot 26°C (78.8°F). In September, in Skiathos, Greece, the average low-temperature is 15°C (59°F).

Rainfall

In Skiathos, it is raining for 3 days, with typically 38mm (1.5") of accumulated precipitation. In Skiathos, during the entire year, the rain falls for 86 days and collects up to 629mm (24.8") of precipitation.

Sea temperature

In Skiathos, Greece, the average seawater temperature is 24.6°C (76.3°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.6°C (76.3°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

In September, the average length of the day is 12.4h.

Sunshine

The average sunshine in Skiathos is 9h.

UV index

The average daily maximum UV index in Skiathos is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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 reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in September in Skiathos?

In September, in Skiathos, Greece, the average high-temperature is 26°C (78.8°F), and the average low-temperature is 15°C (59°F).

How much does it rain in Skiathos in September?

In Skiathos, in September, it is raining for 3 days, with typically 38mm (1.5") of accumulated precipitation.

How warm is the water in September in Skiathos?

In Skiathos, the average seawater temperature in September is 24.6°C (76.3°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24.6°C (76.3°F).

How many hours of daylight does Skiathos have in September?

In September, the average length of the day in Skiathos, Greece, is 12.4h.

How many hours of sunshine does Skiathos have in September?

In Skiathos, Greece, the average sunshine in September is 9h.

What is the UV index reading in September in Skiathos?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Skiathos, Greece
  • Average high temperature in September: 26°C

The warmest month (with the highest average high temperature) is July (30°C).
The month with the lowest average high temperature is January (10°C).

  • Average low temperature in September: 15°C

Months with the highest average low temperature are July and August (18°C).
Coldest months (with the lowest average low temperature) are January and February (3°C).

Average rainfall in September - Skiathos, Greece
  • Average rainfall in September: 38mm

The wettest month (with the highest rainfall) is December (97mm).
The driest month (with the lowest rainfall) is July (19mm).

Average rainfall days in September - Skiathos, Greece
  • Average rainfall days in September: 3 days

Months with the highest number of rainy days are November and December (10 days).
Months with the lowest number of rainy days are August and September (3 days).

Average sea temperature in September - Skiathos, Greece
  • Average sea temperature in September: 24.6°C

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is March (14.2°C).

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

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 9h

The month with most sunshine is July (Average sunshine: 13h).
Months with least sunshine are January and December (Average sunshine: 4).

Average UV index in September - Skiathos, Greece
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).