September weather forecast
Kos, Greece

Clear waters of the Kos Town Harbour, Greece
Clear waters of the Kos Town Harbour, Greece

Weather in September

September, the first month of the autumn in Kos, is also a moderately hot month, with an average temperature ranging between max 25.8°C (78.4°F) and min 22.8°C (73°F).

Temperature

In Kos, the average high-temperature in September is practically the same as in August - a still moderately hot 25.8°C (78.4°F). In Kos, the average low-temperature is 22.8°C (73°F).

Humidity

In Kos, the average relative humidity in September is 66%.

Rainfall

In Kos, Greece, during 3.4 rainfall days, 8mm (0.31") of precipitation is typically accumulated. In Kos, during the entire year, the rain falls for 87.4 days and collects up to 351mm (13.82") of precipitation.

Sea temperature

In Kos, the average seawater temperature in September is 24.9°C (76.8°F).
Note: 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 24.9°C (76.8°F).

Daylight

In September, the average length of the day in Kos, Greece, is 12h and 25min.
On the first day of September in Kos, sunrise is at 06:41 and sunset at 19:40. On the last day of the month, sunrise is at 07:05 and sunset at 18:56 EEST.

Sunshine

In September, the average sunshine is 9.9h.

UV index

The average daily maximum UV index in September in Kos is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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 the 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 reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Kos?

In September, in Kos, the average high-temperature is 25.8°C (78.4°F), and the average low-temperature is 22.8°C (73°F). in August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 31°C (87.8°F).

What is the average humidity in September in Kos?

In Kos, Greece, the average relative humidity in September is 66%.

How much does it rain in Kos in September?

In Kos, during September, the rain falls for 3.4 days and regularly aggregates up to 8mm (0.31") of precipitation.

What is the water temperature in September in Kos?

In Kos, Greece, in September, the average water temperature is 24.9°C (76.8°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.9°C (76.8°F) water.

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

The average day length in September in Kos is 12h and 25min.

When are sunrise and sunset in September in Kos?

On the first day of September in Kos, Greece, sunrise is at 06:41 and sunset at 19:40. On the last day of the month, sunrise is at 07:05 and sunset at 18:56 EEST.

How long on average sun shines in September in Kos?

The average sunshine duration in September in Kos is 9.9h.

What is the UV index reading in September in Kos?

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

Average temperature in September
Kos, Greece

Average temperature in September - Kos, Greece
  • Average high temperature in September: 25.8°C

The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (13.8°C).

  • Average low temperature in September: 22.8°C

The month with the highest average low temperature is August (25°C).
The coldest month (with the lowest average low temperature) is January (11.1°C).

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Average pressure in September
Kos, Greece

Average pressure in September - Kos, Greece
  • Average pressure in September: 1011.9mbar

The month with the highest atmospheric pressure is December (1017.6mbar).
The month with the lowest atmospheric pressure is July (1007.6mbar).

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Average wind speed in September
Kos, Greece

Average wind speed in September - Kos, Greece
  • Average wind speed in September: 17.6km/h

The windiest month (with the highest average wind speed) is January (23.7km/h).
The calmest month (with the lowest average wind speed) is May (14.4km/h).

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Average humidity in September
Kos, Greece

Average humidity in September - Kos, Greece
  • Average humidity in September: 66%

The months with the highest relative humidity are February, April and May (70%).
The months with the lowest relative humidity are July and October (65%).

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Average rainfall in September
Kos, Greece

Average rainfall in September - Kos, Greece
  • Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is January (81mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in September
Kos, Greece

Average rainfall days in September - Kos, Greece
  • Average rainfall days in September: 3.4 days

The month with the highest number of rainy days is January (13.5 days).
The month with the least rainy days is August (0.4 days).

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Average sea temperature in September
Kos, Greece

Average sea temperature in September - Kos, Greece
  • Average sea temperature in September: 24.9°C

The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is March (16.9°C).

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

Average daylight in September / Average sunshine in September - Kos, Greece
  • Average daylight in September: 12h and 25min

The month with the longest days is June (Average daylight: 14h and 39min).
The month with the shortest days is December (Average daylight: 9h and 41min).

  • Average sunshine in September: 9h and 54min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in September
Kos, Greece

Average sunshine days in September - Kos, Greece
  • Average sunshine days in September: 25.5 days

The months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is February (14.1 days).

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Average UV index in September
Kos, Greece

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

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).

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Average cloud cover in September
Kos, Greece

Average cloud cover in September - Kos, Greece
  • Average cloud cover in September: 7

The month with the most cloud cover is January (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 3).

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Average visibility in September
Kos, Greece

Average visibility in September - Kos, Greece
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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