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
September
Weather in September
Temperature
The average high-temperature slightly decreases in September, shifting from a hot 32.5°C (90.5°F) in August to a moderately hot 28°C (82.4°F). Contrasted against daytime highs, Sayan records an average nighttime low of 13.6°C (56.5°F) in September.Humidity
In September, the average relative humidity is 27%.Rainfall
Months with rainfall are January through July, September through December. September is the first month it rains. Throughout September, in the average 0.4 rainfall days, it receives 1mm (0.04") of precipitation. Throughout the year, there are 63.6 rainfall days, and 169mm (6.65") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Sayan, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 05:46 and sunset at 18:40. On the last day of the month, sunrise is at 06:08 and sunset at 17:59 +0330.
Sunshine
In Sayan, the average sunshine in September is 11.2h.UV index
In Sayan, 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 ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
When does it start raining?
When it does not snow?
How many hours of daylight does Sayan have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Sayan have in September?
How high is the UV index in September?
Average temperature in September
Sayan, Iran
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is July (33.7°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 13.6°C
The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Sayan, Iran
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is December (1022mbar).
The month with the lowest atmospheric pressure is July (1007.1mbar).
Average wind speed in September
Sayan, Iran
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is March (13.1km/h).
The calmest month (with the lowest average wind speed) is December (8.4km/h).
Average humidity in September
Sayan, Iran
- Average humidity in September: 27%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is July (24%).
Average rainfall in September
Sayan, Iran
- Average rainfall in September: 1mm
The wettest month (with the highest rainfall) is February (30mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in September
Sayan, Iran
- Average rainfall days in September: 0.4 days
The months with the highest number of rainy days are March and April (9.8 days).
The month with the least rainy days is August (0.3 days).
Average snowfall in September
Sayan, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is February (109mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Sayan, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 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
Sayan, Iran
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).
Average sunshine days in September
Sayan, Iran
- Average sunshine days in September: 29.3 days
The month with the most sunshine days is August (30.3 days).
The month with the least sunshine days is February (16.1 days).
Average UV index in September
Sayan, Iran
- Average UV index in September: 5
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, November and December (UV index 2).
Average cloud cover in September
Sayan, Iran
- Average cloud cover in September: 4
The month with the most cloud cover is January (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in September
Sayan, Iran
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).
