Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With September's advent, Mount Colah sees an average high-temperature of a pleasant 20.6°C (69.1°F), subtly shifted from August's 17.8°C (64°F). In September, the temperature drops to an average of 12.2°C (54°F) at night.Humidity
August and September, with an average relative humidity of 66%, are the least humid months in Mount Colah.Rainfall
September is the month with the least rainfall in Mount Colah. Rain falls for 10.5 days and accumulates 35mm (1.38") of precipitation.Daylight
In September, the average length of the day in Mount Colah is 11h and 53min.On the first day of September, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 5:57 pm AEST.
Sunshine
The average sunshine in September in Mount Colah is 8.8h.UV index
The months with the lowest UV index in Mount Colah are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding the Sun during its peak radiation time around midday is a healthy practice. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What are the temperatures in Mount Colah in September?
What are the least humid months in Mount Colah?
What is the average humidity in September in Mount Colah?
What is the driest month in Mount Colah?
How many days does it rain in September in Mount Colah?
How many hours of daylight does Mount Colah have in September?
What time are sunrise and sunset in September in Mount Colah?
How long on average sun shines in September in Mount Colah?
When is the lowest UV index in Mount Colah?
How high is the UV index in September in Mount Colah?
Average temperature in September
Mount Colah, Australia
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is January (27.3°C).
The month with the lowest average high temperature is July (16.6°C).
- Average low temperature in September: 12.2°C
The month with the highest average low temperature is January (19.8°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).
Average pressure in September
Mount Colah, Australia
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is June (1020.9mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Mount Colah, Australia
- Average wind speed in September: 13.9km/h
The windiest months (with the highest average wind speed) are January and August (14km/h).
The calmest month (with the lowest average wind speed) is April (12.2km/h).
Average humidity in September
Mount Colah, Australia
- Average humidity in September: 66%
The month with the highest relative humidity is February (75%).
The months with the lowest relative humidity are August and September (66%).
Average rainfall in September
Mount Colah, Australia
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is February (92mm).
The driest month (with the least rainfall) is September (35mm).
Average rainfall days in September
Mount Colah, Australia
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is March (18.8 days).
The month with the least rainy days is August (10.1 days).
Average daylight in September /
Average sunshine in September
Mount Colah, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).
Average sunshine days in September
Mount Colah, Australia
- Average sunshine days in September: 17 days
The month with the most sunshine days is August (17.9 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in September
Mount Colah, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February, November and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in September
Mount Colah, Australia
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Mount Colah, Australia
- 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).
Mount Colah, Australia
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