Weather in September
Temperature
As Mount Isa welcomes September, the average high-temperature sees a modest rise, transitioning from a moderately hot 27.3°C (81.1°F) in August to a hot 31.2°C (88.2°F). A stark contrast in day to night temperatures can be seen in September, with an average low-temperature of 14.2°C (57.6°F).Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 18%.Rainfall
In Mount Isa, during September, the rain falls for 1.7 days and regularly aggregates up to 7mm (0.28") of precipitation. In Mount Isa, during the entire year, the rain falls for 50.8 days and collects up to 469mm (18.46") of precipitation.Daylight
In Mount Isa, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of September, sunrise is at 6:23 am and sunset at 6:40 pm AEST.
Sunshine
July through December, with an average of 10h of sunshine, are months with the most sunshine in Mount Isa.UV index
In September, the average daily maximum UV index in Mount Isa is 10. A UV Index value of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 10 in September translates into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Frequent application of a broad-spectrum SPF 30+ sunscreen is crucial, reapply it every two hours or immediately post swimming or outdoor exercise.
Frequently asked questions
How hot is it in Mount Isa in September?
What are the least humid months in Mount Isa?
What is the average humidity in September in Mount Isa?
How many days does it rain in September in Mount Isa?
How many hours of daylight does Mount Isa have in September?
What time are sunrise and sunset in September in Mount Isa?
What is the month with the most sunshine in Mount Isa?
How many hours of sunshine does Mount Isa have in September?
What is the UV index reading in September in Mount Isa?
Average temperature in September
Mount Isa, Australia
- Average high temperature in September: 31.2°C
The warmest month (with the highest average high temperature) is December (37.1°C).
The month with the lowest average high temperature is July (24.7°C).
- Average low temperature in September: 14.2°C
The month with the highest average low temperature is January (23.8°C).
The coldest month (with the lowest average low temperature) is July (8.6°C).
Average humidity in September
Mount Isa, Australia
- Average humidity in September: 18%
The month with the highest relative humidity is February (38%).
The months with the lowest relative humidity are September and October (18%).
Average rainfall in September
Mount Isa, Australia
- Average rainfall in September: 6.7mm
The wettest month (with the highest rainfall) is January (118.8mm).
The driest month (with the least rainfall) is August (3.7mm).
Average rainfall days in September
Mount Isa, Australia
- Average rainfall days in September: 1.7 days
The month with the highest number of rainy days is January (10.2 days).
The month with the least rainy days is August (0.9 days).
Average daylight in September /
Average sunshine in September
Mount Isa, Australia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in September: 10h
The months with the most sunshine are July, August, September, October, November and December (Average sunshine: 10h).
The months with the least sunshine are January, February, March, April, May and June (Average sunshine: 9h).
Average UV index in September
Mount Isa, Australia
- Average UV index in September: 10
The months with the highest UV index are January, February, March, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 6).
Mount Isa, Australia
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