September weather forecastKeles, Turkey
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Keles, Turkey, with temperature in the range of an average low of 12.1°C (53.8°F) and an average high of 24.1°C (75.4°F).Temperature
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 28.1°C (82.6°F) in August to a still warm 24.1°C (75.4°F). September nights present a stark temperature decrease to a fresh 12.1°C (53.8°F).Humidity
July through September, with an average relative humidity of 66%, are the least humid months.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 27mm (1.06") of precipitation is accumulated. Throughout the year, there are 138.3 rainfall days, and 455mm (17.91") of precipitation is accumulated.Snowfall
May through November are months without snowfall.Daylight
The average length of the day in September in Keles is 12h and 27min.On the first day of the month, sunrise is at 06:31 and sunset at 19:34. On the last day of September, sunrise is at 06:58 and sunset at 18:47 +03.
Sunshine
In September, the average sunshine is 9h.UV index
In Keles, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Keles, Turkey
- Average high temperature in September: 24.1°C
The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Keles, Turkey
- Average pressure in September: 1014.7mbar
The month with the highest atmospheric pressure is December (1019.9mbar).
The month with the lowest atmospheric pressure is July (1011.3mbar).
Average wind speed in September
Keles, Turkey
- Average wind speed in September: 7.9km/h
The windiest month (with the highest average wind speed) is February (10.4km/h).
The calmest month (with the lowest average wind speed) is October (7.7km/h).
Average humidity in September
Keles, Turkey
- Average humidity in September: 66%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July, August and September (66%).
Average rainfall in September
Keles, Turkey
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is June (60mm).
The driest month (with the least rainfall) is November (17mm).
Average rainfall days in September
Keles, Turkey
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in September
Keles, Turkey
- Average snowfall in September: 0mm
The month with the highest snowfall is January (102mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Keles, Turkey
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Keles, Turkey
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Keles, Turkey
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
Keles, Turkey
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Keles, Turkey
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Keles, Turkey
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (8km).
