Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a hot 32.8°C (91°F) in August to a moderately hot 28°C (82.4°F). In the month of September, Deryas witnesses a marked temperature drop at night, averaging a low of 13.3°C (55.9°F).Humidity
In Deryas, the average relative humidity in September is 32%.Rainfall
January through July, September through December are months with rainfall. September is the first month it rains in Deryas. Throughout September, in the average 1 rainfall days, it receives 1mm (0.04") of precipitation. In Deryas, during the entire year, the rain falls for 74.6 days and collects up to 236mm (9.29") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Deryas, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:58 and sunset at 18:55. On the last day of September, sunrise is at 06:21 and sunset at 18:12 +0330.
Sunshine
In Deryas, the average sunshine in September is 10.2h.UV index
In Deryas, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Act with care - The need to guard against sun damage is communicated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
How hot is September in Deryas?
What is the average humidity in September in Deryas?
When does it start raining in Deryas?
When it does not snow in Deryas?
What is the average length of the day in September in Deryas?
When is the sunrise / sunset in September in Deryas?
How long on average sun shines in September in Deryas?
What is the UV index intensity in September in Deryas?
Average temperature in September
Deryas, Iran
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is July (33.3°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 13.3°C
The month with the highest average low temperature is July (18.3°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).
Average pressure in September
Deryas, Iran
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is December (1022mbar).
The month with the lowest atmospheric pressure is July (1006.2mbar).
Average wind speed in September
Deryas, Iran
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is May (10.9km/h).
The calmest month (with the lowest average wind speed) is November (7.3km/h).
Average humidity in September
Deryas, Iran
- Average humidity in September: 32%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (28%).
Average rainfall in September
Deryas, Iran
- Average rainfall in September: 1mm
The wettest month (with the highest rainfall) is March (47mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in September
Deryas, Iran
- Average rainfall days in September: 1 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (0.2 days).
Average snowfall in September
Deryas, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is January (169mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Deryas, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Deryas, Iran
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 36min).
Average sunshine days in September
Deryas, Iran
- Average sunshine days in September: 28.5 days
The month with the most sunshine days is August (30.6 days).
The month with the least sunshine days is February (15 days).
Average UV index in September
Deryas, Iran
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Deryas, Iran
- Average cloud cover in September: 4
The month with the most cloud cover is January (Cloud cover 30).
The months with the least cloud cover are June, August and September (Cloud cover 4).
Average visibility in September
Deryas, Iran
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
Deryas, Iran
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