September weather forecast
Kolonaki, Greece

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Weather in September

September, the first month of the autumn in Kolonaki, is still a warm month, with an average temperature fluctuating between 20.9°C (69.6°F) and 27.2°C (81°F).

Temperature

September witnesses a gentle descent in average high-temperature, descending from August's tropical 31°C (87.8°F) to a warm 27.2°C (81°F). During the month of September, the temperature in Kolonaki falls to an average of 20.9°C (69.6°F).

Heat index

The heat index in September is calculated to be 28°C (82.4°F). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

The average relative humidity in September is 58%.

Rainfall

In Kolonaki, in September, during 7.3 rainfall days, 21mm (0.83") of precipitation is typically accumulated. Throughout the year, in Kolonaki, there are 98.8 rainfall days, and 350mm (13.78") of precipitation is accumulated.

Snowfall

In Kolonaki, snow does not fall in April through December.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 06:55 and sunset at 19:54. On the last day of September, in Kolonaki, sunrise is at 07:20 and sunset at 19:09 EEST.

Sunshine

In September, the average sunshine is 9.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during September leads to these instructions:
Ward off overexposure. Defence against solar harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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Frequently asked questions

What is the temperature in September in Kolonaki?

The high-temperature, in September, in Kolonaki, is 27.2°C (81°F), while the low-temperature averages to 20.9°C (69.6°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in September is calculated to be 28°C (82.4°F).

What is the average humidity in September in Kolonaki?

In Kolonaki, Greece, the average relative humidity in September is 58%.

How many days does it rain in September in Kolonaki?

In Kolonaki, in September, it is raining for 7.3 days, with typically 21mm (0.83") of accumulated precipitation.

When it does not snow in Kolonaki?

In Kolonaki, snow does not fall in April through December.

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

The average day length in September in Kolonaki, Greece, is 12h and 26min.

When are sunrise and sunset in September in Kolonaki?

On the first day of September, sunrise is at 06:55 and sunset at 19:54. On the last day of the month, sunrise is at 07:20 and sunset at 19:09 EEST.

How long on average sun shines in September in Kolonaki?

In September, the average sunshine duration in Kolonaki, Greece, is 9.9h.

What is the UV index intensity in September in Kolonaki?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Kolonaki, Greece

Average temperature in September - Kolonaki, Greece
  • Average high temperature in September: 27.2°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (12.1°C).

  • Average low temperature in September: 20.9°C

The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (7.3°C).

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Average pressure in September
Kolonaki, Greece

Average pressure in September - Kolonaki, Greece
  • Average pressure in September: 1014.3mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011.1mbar).

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Average wind speed in September
Kolonaki, Greece

Average wind speed in September - Kolonaki, Greece
  • Average wind speed in September: 13.4km/h

The windiest month (with the highest average wind speed) is August (16.3km/h).
The calmest month (with the lowest average wind speed) is May (11.6km/h).

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Average humidity in September
Kolonaki, Greece

Average humidity in September - Kolonaki, Greece
  • Average humidity in September: 58%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in September
Kolonaki, Greece

Average rainfall in September - Kolonaki, Greece
  • Average rainfall in September: 21mm

The wettest month (with the highest rainfall) is December (53mm).
The driest month (with the least rainfall) is August (4mm).

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Average rainfall days in September
Kolonaki, Greece

Average rainfall days in September - Kolonaki, Greece
  • Average rainfall days in September: 7.3 days

The month with the highest number of rainy days is January (11.3 days).
The month with the least rainy days is August (1.8 days).

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Average snowfall in September
Kolonaki, Greece

Average snowfall in September - Kolonaki, Greece
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (9mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in September
Kolonaki, Greece

Average snowfall days in September - Kolonaki, Greece
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Kolonaki, Greece
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in September
Kolonaki, Greece

Average sunshine days in September - Kolonaki, Greece
  • Average sunshine days in September: 21.4 days

The month with the most sunshine days is August (28.5 days).
The month with the least sunshine days is February (14.1 days).

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Average UV index in September
Kolonaki, Greece

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

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Kolonaki, Greece

Average cloud cover in September - Kolonaki, Greece
  • Average cloud cover in September: 15

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in September
Kolonaki, Greece

Average visibility in September - Kolonaki, 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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Kolonaki, Greece

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