September weather forecastChehel Tanan, Iran
September
Weather in September
September, the first month of the autumn in Chehel Tanan, is still a warm month, with an average temperature fluctuating between 26.7°C (80.1°F) and 12.6°C (54.7°F).Temperature
The start of September signals a gentle decrease in the average high-temperature, transitioning from a tropical 30.3°C (86.5°F) in August to a moderately hot 26.7°C (80.1°F). During September nights, Chehel Tanan documents a marked contrast from daily highs, with an average temperature of 12.6°C (54.7°F).Humidity
In Chehel Tanan, the average relative humidity in September is 22%.Rainfall
September is the only month when rain does not fall in Chehel Tanan.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 05:44 and sunset at 18:32. On the last day of the month, sunrise is at 06:02 and sunset at 17:55 +0330.
Sunshine
In September, the average sunshine is 11.8h.UV index
In Chehel Tanan, Iran, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chehel Tanan, Iran
- Average high temperature in September: 26.7°C
The warmest month (with the highest average high temperature) is July (31.6°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in September: 12.6°C
The month with the highest average low temperature is July (18.2°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Chehel Tanan, Iran
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is July (1005mbar).
Average wind speed in September
Chehel Tanan, Iran
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is March (11km/h).
The calmest month (with the lowest average wind speed) is November (6.4km/h).
Average humidity in September
Chehel Tanan, Iran
- Average humidity in September: 22%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is July (17%).
Average rainfall in September
Chehel Tanan, Iran
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is February (37mm).
The driest month (with the least rainfall) is September (0mm).
Average rainfall days in September
Chehel Tanan, Iran
- Average rainfall days in September: 0.9 days
The month with the highest number of rainy days is April (9.3 days).
The months with the least rainy days are August and September (0.9 days).
Average snowfall in September
Chehel Tanan, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is January (160mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Chehel Tanan, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.1 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
Chehel Tanan, Iran
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 11h and 48min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and November (Average sunshine: 7h and 0min).
Average sunshine days in September
Chehel Tanan, Iran
- Average sunshine days in September: 28.9 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is February (16.6 days).
Average UV index in September
Chehel Tanan, 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
Chehel Tanan, Iran
- Average cloud cover in September: 5
The months with the most cloud cover are January and February (Cloud cover 20).
The month with the least cloud cover is September (Cloud cover 5).
Average visibility in September
Chehel Tanan, Iran
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
