Oia
Greece
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Oia, Greece

September, the first month of the autumn, in Oia, is still a warm month, with average temperature fluctuating between 26°C (78.8°F) and 21°C (69.8°F).

Temperature

In Oia, the average high-temperature is essentially the same as in August - a still moderately hot 26°C (78.8°F). The average low-temperature, in Oia, is 21°C (69.8°F).

Rainfall

In September, the rain falls for 1 days. Throughout September, 13mm (0.5") of precipitation is accumulated. In Oia, during the entire year, the rain falls for 65 days and collects up to 554mm (21.8") of precipitation.

Sea temperature

In Oia, the average seawater temperature is 23°C (73.4°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 23°C (73.4°F).

Daylight

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

Sunshine

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

UV index

In Oia, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the average person.
The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. 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 Oia?

The average high-temperature, in September, in Oia, is 26°C (78.8°F), while the average low-temperature is 21°C (69.8°F).

How much does it rain in Oia in September?

In Oia, in September, it is raining for 1 days, with typically 13mm (0.5") of accumulated precipitation.

What is the sea temperature in September in Oia?

In Oia, the average seawater temperature in September is 23°C (73.4°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 23°C (73.4°F).

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

The average length of the day in September in Oia, Greece, is 12.4h.

How many hours of sunshine does Oia have in September?

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

What is the UV index reading in September in Oia?

The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Oia, Greece
  • Average high temperature in September: 26°C

The warmest month (with the highest average high temperature) is August (28°C).
Months with the lowest average high temperature are January and February (14°C).

  • Average low temperature in September: 21°C

Months with the highest average low temperature are July and August (23°C).
Coldest months (with the lowest average low temperature) are January and February (9°C).

Average rainfall in September - Oia, Greece
  • Average rainfall in September: 13mm

The wettest month (with the highest rainfall) is January (114mm).
Driest months (with the lowest rainfall) are July and August (1mm).

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

The month with the highest number of rainy days is December (12 days).
Months with the lowest number of rainy days are June, July, August and September (1 days).

Average sea temperature in September - Oia, Greece
  • Average sea temperature in September: 23°C

The best month for swimming (with the highest average sea temperature) is August (24°C).
Coldest months (with the lowest average sea temperature) are February and March (15°C).

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

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 10h

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

Average UV index in September - Oia, 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).