Mount Isa
September
Weather in Mount Isa for September 2026
Your guide to Mount Isa weather in September - trends and predictions
In general, the average temperature in Mount Isa at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 32.3 °C by the end of September.
Precipitation in Mount Isa during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
More
29
Dry days
1
Rainy days
0
Snow days
31°/19°
Temperatures
30 km/h
Avg max wind
24 %
Avg humidity
Mount Isa Weather September
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Temperatures trend during September in Mount Isa
See the weather trend as well as the moving average line
September weather in Mount Isa day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 28° /15° | 0 mm | 8 | |
| 2 Sept. | Sunny | 30° /15° | 0 mm | 9 | |
| 3 Sept. | Sunny | 30° /16° | 0 mm | 9 | |
| 4 Sept. | Sunny | 30° /17° | 0 mm | 8 | |
| 5 Sept. | Sunny | 32° /18° | 0 mm | 9 | |
| 6 Sept. | Sunny | 32° /20° | 0.2 mm | 9 | |
| 7 Sept. | Sunny | 32° /20° | 0 mm | 9 | |
| 8 Sept. | Sunny | 31° /19° | 0 mm | 9 | |
| 9 Sept. | Sunny | 31° /18° | 0 mm | 9 | |
| 10 Sept. | Sunny | 30° /18° | 0.1 mm | 8 | |
| 11 Sept. | Sunny | 29° /16° | 0 mm | 8 | |
| 12 Sept. | Sunny | 28° /16° | 0 mm | 8 | |
| 13 Sept. | Sunny | 27° /15° | 0 mm | 8 | |
| 14 Sept. | Sunny | 29° /16° | 0 mm | 8 | |
| 15 Sept. | Sunny | 31° /17° | 0 mm | 9 | |
| 16 Sept. | Sunny | 31° /19° | 0 mm | 9 | |
| 17 Sept. | Sunny | 31° /20° | 0 mm | 8 | |
| 18 Sept. | Sunny | 29° /20° | 0.2 mm | 8 | |
| 19 Sept. |  Partly cloudy | 32° /20° | 0 mm | 9 | |
| 20 Sept. | Sunny | 33° /19° | 0.2 mm | 9 | |
| 21 Sept. | Sunny | 33° /19° | 0 mm | 9 | |
| 22 Sept. | Sunny | 32° /18° | 0 mm | 9 | |
| 23 Sept. | Sunny | 31° /18° | 0 mm | 9 | |
| 24 Sept. | Partly cloudy | 31° /20° | 0 mm | 9 | |
| 25 Sept. | Sunny | 32° /19° | 0 mm | 9 | |
| 26 Sept. | Sunny | 31° /20° | 0.7 mm | 8 | |
| 27 Sept. | Sunny | 31° /19° | 0 mm | 9 | |
| 28 Sept. | Sunny | 33° /18° | 0 mm | 9 | |
| 29 Sept. | Sunny | 34° /20° | 0 mm | 9 | |
| 30 Sept. | Sunny | 34° /21° | 0 mm | 9 | |
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Important Notice
Our weather forecast for Mount Isa in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Mount Isa forecast closer to your planned date for the most up-to-date weather information.
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Mount Isa in September - FAQ
What are the expected maximum and minimum temperatures in Mount Isa during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Mount Isa during September?
Rainfall in Mount Isa during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Mount Isa during September?
The average wind speed in Mount Isa during September is 30 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Mount Isa during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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