September weather forecast
Dassia, Greece

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Dassia, Greece, with an average temperature varying between 25°C (77°F) and 21.4°C (70.5°F).

Temperature

Dassia's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 28.5°C (83.3°F) to a still warm 25°C (77°F). Dassia's nighttime temperatures in September settle close to daytime highs at an average of 21.4°C (70.5°F).

Humidity

The average relative humidity in September in Dassia is 65%.

Rainfall

In Dassia, in September, it is raining for 10.7 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, in Dassia, there are 147.4 rainfall days, and 888mm (34.96") of precipitation is accumulated.

Snowfall

In Dassia, snow does not fall in February through December.

Sea temperature

In Dassia, the average seawater temperature in September is 24°C (75.2°F).
Note: People sensitive to cold might find swimming in 24°C (75.2°F) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.

Daylight

In Dassia, Greece, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 07:09 and sunset at 20:11. On the last day of September, in Dassia, Greece, sunrise is at 07:36 and sunset at 19:24 EEST.

Sunshine

In September, the average sunshine in Dassia is 9.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Attention! UV strength is notably upped by the reflection of sand and water.
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Frequently asked questions

What is the usual temperature for Dassia in September?

In September, the average high-temperature and low-temperature in Dassia, Greece, are 25°C (77°F) and 21.4°C (70.5°F) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 31°C (87.8°F).

What is the average humidity in September in Dassia?

In September, the average relative humidity is 65%.

How much does it rain in Dassia in September?

In Dassia, during September, the rain falls for 10.7 days and regularly aggregates up to 55mm (2.17") of precipitation.

When it does not snow in Dassia?

In Dassia, Greece, snow does not fall in February through December.

What is the sea temperature in September in Dassia?

In September, the average sea temperature is 24°C (75.2°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24°C (75.2°F) water may be enjoyable.

How many hours of daylight does Dassia have in September?

The average day length in September in Dassia is 12h and 27min.

When are sunrise and sunset in September in Dassia?

On the first day of September, sunrise is at 07:09 and sunset at 20:11. On the last day of the month, sunrise is at 07:36 and sunset at 19:24 EEST.

How many hours of sunshine does Dassia have in September?

In September, the average sunshine duration in Dassia is 9.5h.

What is the UV index intensity in September in Dassia?

The average daily maximum UV index in September in Dassia is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
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
Dassia, Greece

Average temperature in September - Dassia, Greece
  • Average high temperature in September: 25°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 (11.8°C).

  • Average low temperature in September: 21.4°C

The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (8.9°C).

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Average pressure in September
Dassia, Greece

Average pressure in September - Dassia, Greece
  • Average pressure in September: 1014.9mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1012.2mbar).

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Average wind speed in September
Dassia, Greece

Average wind speed in September - Dassia, Greece
  • Average wind speed in September: 11.7km/h

The windiest month (with the highest average wind speed) is February (17.2km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).

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Average humidity in September
Dassia, Greece

Average humidity in September - Dassia, Greece
  • Average humidity in September: 65%

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in September
Dassia, Greece

Average rainfall in September - Dassia, Greece
  • Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is November (197mm).
The driest month (with the least rainfall) is August (9mm).

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Average rainfall days in September
Dassia, Greece

Average rainfall days in September - Dassia, Greece
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is January (16.8 days).
The month with the least rainy days is August (3.9 days).

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Average snowfall in September
Dassia, Greece

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

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in September
Dassia, Greece

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

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in September
Dassia, Greece

Average sea temperature in September - Dassia, Greece
  • Average sea temperature in September: 24°C

The best month for swimming (with the highest average sea temperature) is August (25°C).
The coldest months (with the lowest average sea temperature) are February and March (14°C).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in September
Dassia, Greece

Average sunshine days in September - Dassia, Greece
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is February (10.6 days).

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Average UV index in September
Dassia, Greece

Average UV index in September - Dassia, 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 February and December (UV index 3).

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Average cloud cover in September
Dassia, Greece

Average cloud cover in September - Dassia, Greece
  • Average cloud cover in September: 16

The month with the most cloud cover is January (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 8).

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Average visibility in September
Dassia, Greece

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

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).

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Dassia, Greece

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