September weather forecastRostam Rah, Iran
September
Weather in September
The first month of the autumn, September, is still a warm month in Rostam Rah, Iran, with an average temperature fluctuating between 27.9°C (82.2°F) and 11.5°C (52.7°F).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a warm 27.9°C (82.2°F) from a hot 32.6°C (90.7°F). Following the sharp contrast to daytime warmth, an average nighttime temperature of 11.5°C (52.7°F) gets registered during September.Humidity
The average relative humidity in September is 25%.Rainfall
In Rostam Rah, Iran, during September, the rain falls for 1.6 days and regularly aggregates up to 2mm (0.08") of precipitation. Throughout the year, there are 83.6 rainfall days, and 350mm (13.78") of precipitation is accumulated.Snowfall
In Rostam Rah, snow does not fall in April through October.Daylight
In Rostam Rah, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 05:47 and sunset at 18:39. On the last day of the month, sunrise is at 06:08 and sunset at 17:59 +0330.
Sunshine
In September, the average sunshine is 11.2h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Take necessary precautions - Defending against sun damage is advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rostam Rah, Iran
- Average high temperature in September: 27.9°C
The warmest month (with the highest average high temperature) is July (33.4°C).
The month with the lowest average high temperature is January (3.7°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is July (17.2°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).
Average pressure in September
Rostam Rah, Iran
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is July (1004.7mbar).
Average wind speed in September
Rostam Rah, Iran
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is March (10.7km/h).
The calmest month (with the lowest average wind speed) is November (7.2km/h).
Average humidity in September
Rostam Rah, Iran
- Average humidity in September: 25%
The months with the highest relative humidity are January and February (68%).
The month with the lowest relative humidity is July (19%).
Average rainfall in September
Rostam Rah, Iran
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is March (64mm).
The driest month (with the least rainfall) is August (1mm).
Average rainfall days in September
Rostam Rah, Iran
- Average rainfall days in September: 1.6 days
The month with the highest number of rainy days is April (13.6 days).
The month with the least rainy days is August (1.3 days).
Average snowfall in September
Rostam Rah, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is January (153mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Rostam Rah, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Rostam Rah, Iran
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 11h and 12min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 36min).
Average sunshine days in September
Rostam Rah, Iran
- Average sunshine days in September: 27.7 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is April (14.3 days).
Average UV index in September
Rostam Rah, 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 and December (UV index 2).
Average cloud cover in September
Rostam Rah, Iran
- Average cloud cover in September: 4
The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in September
Rostam Rah, 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).
