September weather forecast
Bornova, Turkey

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Weather in September

September, the first month of the autumn in Bornova, is still a warm month, with temperature in the range of an average low of 18.8°C (65.8°F) and an average high of 28.3°C (82.9°F).

Temperature

As Bornova enters September, the average high-temperature subtly lowers from the a tropical 33°C (91.4°F) of August to a moderately hot 28.3°C (82.9°F). In September, Bornova experiences an average nighttime temperature of 18.8°C (65.8°F).

Heat index

For most parts of September, the heat index is computed to be 29°C (84.2°F). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In September, the average relative humidity is 56%.

Rainfall

In September, the rain falls for 4.1 days. Throughout September, 13mm (0.51") of precipitation is accumulated. Throughout the year, there are 93.5 rainfall days, and 386mm (15.2") of precipitation is accumulated.

Snowfall

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

Daylight

In Bornova, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 06:40 and sunset at 19:41. On the last day of the month, sunrise is at 07:06 and sunset at 18:55 +03.

Sunshine

In September, the average sunshine in Bornova is 9.7h.

UV index

The average daily maximum UV index in September in Bornova is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Enhance your sun protection with tightly woven, yet airy clothing.
Resources | Updated: Feb 5, 2024 | Published by: Weather Atlas

Frequently asked questions

Is it hot in Bornova during September?

An average high-temperature, in September, in Bornova, is 28.3°C (82.9°F) and the average low-temperature is 18.8°C (65.8°F). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is computed to be 29°C (84.2°F).

What is the average humidity in September in Bornova?

The average relative humidity in September is 56%.

How many days does it rain in September in Bornova?

In Bornova, Turkey, during September, the rain falls for 4.1 days and regularly aggregates up to 13mm (0.51") of precipitation.

When it does not snow in Bornova?

February through December are months without snowfall.

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

In September, the average day length is 12h and 26min.

When are sunrise and sunset in September in Bornova?

On the first day of September in Bornova, Turkey, sunrise is at 06:40 and sunset at 19:41. On the last day of the month, sunrise is at 07:06 and sunset at 18:55 +03.

How many hours of sunshine does Bornova have in September?

In Bornova, the average sunshine duration in September is 9.7h.

How high is the UV index in September in Bornova?

The average daily maximum UV index in September in Bornova, Turkey, is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe 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
Bornova, Turkey

Average temperature in September - Bornova, Turkey
  • Average high temperature in September: 28.3°C

The warmest month (with the highest average high temperature) is August (33°C).
The month with the lowest average high temperature is January (10.9°C).

  • Average low temperature in September: 18.8°C

The months with the highest average low temperature are July and August (21.7°C).
The coldest month (with the lowest average low temperature) is January (5.8°C).

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Average pressure in September
Bornova, Turkey

Average pressure in September - Bornova, Turkey
  • Average pressure in September: 1012.8mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).

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Average wind speed in September
Bornova, Turkey

Average wind speed in September - Bornova, Turkey
  • Average wind speed in September: 12.9km/h

The windiest month (with the highest average wind speed) is January (16km/h).
The calmest month (with the lowest average wind speed) is May (12km/h).

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Average humidity in September
Bornova, Turkey

Average humidity in September - Bornova, Turkey
  • Average humidity in September: 56%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (50%).

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Average rainfall in September
Bornova, Turkey

Average rainfall in September - Bornova, Turkey
  • Average rainfall in September: 13mm

The wettest month (with the highest rainfall) is January (69mm).
The driest month (with the least rainfall) is July (2mm).

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Average rainfall days in September
Bornova, Turkey

Average rainfall days in September - Bornova, Turkey
  • Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is January (12.6 days).
The month with the least rainy days is August (1.3 days).

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Average snowfall in September
Bornova, Turkey

Average snowfall in September - Bornova, Turkey
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (8mm).
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
Bornova, Turkey

Average snowfall days in September - Bornova, Turkey
  • 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 March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Bornova, Turkey

Average daylight in September / Average sunshine in September - Bornova, Turkey
  • 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 30min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in September
Bornova, Turkey

Average sunshine days in September - Bornova, Turkey
  • Average sunshine days in September: 25.5 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is February (15.3 days).

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Average UV index in September
Bornova, Turkey

Average UV index in September - Bornova, Turkey
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in September
Bornova, Turkey

Average cloud cover in September - Bornova, Turkey
  • Average cloud cover in September: 11

The month with the most cloud cover is January (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 4).

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Average visibility in September
Bornova, Turkey

Average visibility in September - Bornova, Turkey
  • 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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Bornova, Turkey

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