September weather forecastIsfahan, Iran
September
Weather in September
September marks the beginning of the transition into the milder autumn season in Isfahan. The temperature begin its slow slide downwards, presenting more bearable conditions. However, with the city recording its maximum of 31.2°C (88.2°F), the residual heat of summer days can still be felt. Yet the evenings are beautiful, accompanied by the perfect nip in the air.Temperature
In September, the average high-temperature marginally drops from a torrid 35.1°C (95.2°F) in August to a hot 31.2°C (88.2°F). Despite the hot September days, Isfahan's nights see an average temperature plunge to a moderate 15.1°C (59.2°F).Humidity
In Isfahan, Iran, the average relative humidity in September is 26%.Rainfall
September is the only month when rain does not fall in Isfahan.Snowfall
In Isfahan, snow does not fall in May through October.Daylight
The average length of the day in September in Isfahan is 12h and 22min.On the first day of the month, sunrise is at 05:38 and sunset at 18:28. On the last day of September, sunrise is at 05:56 and sunset at 17:49 +0330.
Sunshine
The average sunshine in September in Isfahan is 10.4h.UV index
The average daily maximum UV index in September in Isfahan is 10. A UV Index reading of 8 to 10 represents a very high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 10 in September translates into these instructions:
Taking safety measures is non-negotiable; skin and eyes can be swiftly affected if neglected. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Despite the clouds, sunscreen with an SPF of at least 30 should be used liberally and reapplied frequently, especially after a swim or outdoor workout.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Isfahan, Iran
- Average high temperature in September: 31.2°C
The warmest month (with the highest average high temperature) is July (36.4°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 15.1°C
The month with the highest average low temperature is July (21.5°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).
Average humidity in September
Isfahan, Iran
- Average humidity in September: 26%
The month with the highest relative humidity is January (60%).
The months with the lowest relative humidity are June and July (23%).
Average rainfall in September
Isfahan, Iran
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is December (19.6mm).
The driest month (with the least rainfall) is September (0mm).
Average rainfall days in September
Isfahan, Iran
- Average rainfall days in September: 0 days
The month with the highest number of rainy days is January (4 days).
The month with the least rainy days is September (0 days).
Average snowfall days in September
Isfahan, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.2 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
Isfahan, Iran
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 6h and 36min).
Average UV index in September
Isfahan, Iran
- Average UV index in September: 10
The months with the highest UV index are May, June, July and August (UV index 12).
The months with the lowest UV index are January and December (UV index 3).
