September weather forecastIsti, Iran
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Isti, Iran, with temperature in the range of an average low of 14.8°C (58.6°F) and an average high of 21.9°C (71.4°F).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's warm 26.2°C (79.2°F) to a pleasant 21.9°C (71.4°F). Throughout September, Isti witnesses a nighttime temperature average of 14.8°C (58.6°F).Humidity
The average relative humidity in September in Isti, Iran, is 73%.Rainfall
In Isti, in September, it is raining for 12.9 days, with typically 26mm (1.02") of accumulated precipitation. Throughout the year, in Isti, there are 131.9 rainfall days, and 530mm (20.87") of precipitation is accumulated.Snowfall
May through September are months without snowfall in Isti.Daylight
In September, the average length of the day in Isti is 12h and 26min.On the first day of September, sunrise is at 05:47 and sunset at 18:48. On the last day of the month, sunrise is at 06:13 and sunset at 18:02 +0330.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Undertake protective steps - Preventing sun damage is advised. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Isti, Iran
- Average high temperature in September: 21.9°C
The warmest month (with the highest average high temperature) is July (27.3°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in September: 14.8°C
The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is February (-0.5°C).
Average pressure in September
Isti, Iran
- Average pressure in September: 1014.8mbar
The month with the highest atmospheric pressure is November (1022.1mbar).
The month with the lowest atmospheric pressure is July (1009.4mbar).
Average wind speed in September
Isti, Iran
- Average wind speed in September: 9.2km/h
The windiest months (with the highest average wind speed) are July and August (10km/h).
The calmest month (with the lowest average wind speed) is December (7.7km/h).
Average humidity in September
Isti, Iran
- Average humidity in September: 73%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is July (57%).
Average rainfall in September
Isti, Iran
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is July (13mm).
Average rainfall days in September
Isti, Iran
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is October (16.3 days).
The month with the least rainy days is August (6.5 days).
Average snowfall in September
Isti, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is January (415mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Isti, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Isti, Iran
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is November (Average sunshine: 5h and 30min).
Average sunshine days in September
Isti, Iran
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is April (8.2 days).
Average UV index in September
Isti, Iran
- 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, March and December (UV index 2).
Average cloud cover in September
Isti, Iran
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Isti, Iran
- Average visibility in September: 9km
The months with the highest visibility are May, June, July and August (10km).
The month with the lowest visibility is February (8km).
