September weather forecastGuyom, Iran
September
Weather in September
The first month of the autumn, September, is still a hot month in Guyom, Iran, with an average temperature fluctuating between 19.7°C (67.5°F) and 30.7°C (87.3°F).Temperature
Guyom records a mild change in average high-temperature during September, easing from a tropical 34.2°C (93.6°F) in August to a still hot 30.7°C (87.3°F). During the September nights, an average temperature of 19.7°C (67.5°F) is observed.Humidity
In September, the average relative humidity in Guyom is 18%.Rainfall
June, July and September are months without rainfall.Snowfall
In Guyom, snow does not fall in April through December.Daylight
In Guyom, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 05:38 and sunset at 18:23. On the last day of September, in Guyom, sunrise is at 05:53 and sunset at 17:47 +0330.
Sunshine
The average sunshine in September in Guyom is 11.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Fend off overexposure. Sun protection is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Guyom, Iran
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is July (35.6°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in September: 19.7°C
The month with the highest average low temperature is July (24.2°C).
The coldest month (with the lowest average low temperature) is January (2.6°C).
Average pressure in September
Guyom, Iran
- Average pressure in September: 1009.3mbar
The month with the highest atmospheric pressure is December (1019.5mbar).
The month with the lowest atmospheric pressure is July (1002.1mbar).
Average wind speed in September
Guyom, Iran
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is May (11.1km/h).
The calmest month (with the lowest average wind speed) is December (6.3km/h).
Average humidity in September
Guyom, Iran
- Average humidity in September: 18%
The months with the highest relative humidity are January and February (47%).
The month with the lowest relative humidity is June (12%).
Average rainfall in September
Guyom, Iran
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is January (40mm).
The driest months (with the least rainfall) are June, July and September (0mm).
Average rainfall days in September
Guyom, Iran
- Average rainfall days in September: 0.6 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (0.4 days).
Average snowfall in September
Guyom, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is January (33mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Guyom, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Guyom, Iran
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 11h and 24min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 7h and 12min).
Average sunshine days in September
Guyom, Iran
- Average sunshine days in September: 29.3 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is February (20.3 days).
Average UV index in September
Guyom, Iran
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Guyom, Iran
- Average cloud cover in September: 3
The month with the most cloud cover is February (Cloud cover 17).
The month with the least cloud cover is September (Cloud cover 3).
Average visibility in September
Guyom, Iran
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
