September weather forecastChangi, Iran
September
Weather in September
September, the first month of the autumn in Changi, is still a tropical month, with temperature in the range of an average high of 31.8°C (89.2°F) and an average low of 22.5°C (72.5°F).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's sweltering 36.6°C (97.9°F) to a hot 31.8°C (89.2°F). Changi records a mean low-temperature of 22.5°C (72.5°F) in September.Humidity
The average relative humidity in September is 18%.Rainfall
August and September are months with the least rain in Changi when the rain falls for 1.4 days and typically aggregates up to 1mm (0.04") of rain.Snowfall
March through October are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 05:35 and sunset at 18:30. On the last day of September, sunrise is at 05:57 and sunset at 17:48 +0330.
Sunshine
In Changi, the average sunshine in September is 11.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Changi, Iran
- Average high temperature in September: 31.8°C
The warmest month (with the highest average high temperature) is July (38.3°C).
The month with the lowest average high temperature is January (9.7°C).
- Average low temperature in September: 22.5°C
The month with the highest average low temperature is July (28°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Changi, Iran
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is December (1021.5mbar).
The month with the lowest atmospheric pressure is July (1006.3mbar).
Average wind speed in September
Changi, Iran
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is July (11.7km/h).
The calmest month (with the lowest average wind speed) is December (5.9km/h).
Average humidity in September
Changi, Iran
- Average humidity in September: 18%
The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is July (15%).
Average rainfall in September
Changi, Iran
- Average rainfall in September: 1mm
The wettest month (with the highest rainfall) is April (23mm).
The driest months (with the least rainfall) are August and September (1mm).
Average rainfall days in September
Changi, Iran
- Average rainfall days in September: 1.4 days
The month with the highest number of rainy days is April (10.9 days).
The month with the least rainy days is August (0.5 days).
Average snowfall in September
Changi, Iran
- Average snowfall in September: 0mm
The month with the highest snowfall is February (11mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Changi, Iran
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
Changi, Iran
- Average daylight in September: 12h and 24min
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 36min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and February (Average sunshine: 7h and 12min).
Average sunshine days in September
Changi, Iran
- Average sunshine days in September: 27 days
The month with the most sunshine days is August (29 days).
The month with the least sunshine days is April (14.2 days).
Average UV index in September
Changi, Iran
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Changi, Iran
- Average cloud cover in September: 3
The month with the most cloud cover is March (Cloud cover 20).
The month with the least cloud cover is September (Cloud cover 3).
Average visibility in September
Changi, 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).
