Mount Isa
December
Weather in Mount Isa for December 2025
Your guide to Mount Isa weather in December - trends and predictions
Until now, December 2025 in Mount Isa has been nearly identical to the historical average, with a temperature of 37.2 °C (showing only a slight deviation of 0.2 °C).
Expect cooler weather in the next days in Mount Isa with the forecast suggesting a temperature of 34.1 °C, lower than the historical average.
In general, the average temperature in Mount Isa at the beginning of December is 36 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 37.4 °C by the end of December.
With an average of 5 rainy days, Mount Isa experiences minimal rainfall in December.
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Temperatures
Rain 🌧️
More
26
Dry days
5
Rainy days
0
Snow days
38°/27°
Temperatures
28 km/h
Avg max wind
30 %
Avg humidity
Mount Isa Weather December
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Temperatures trend during December in Mount Isa
See the weather trend as well as the moving average line
December weather in Mount Isa day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Sunny | 35° /24° | 0.5 mm | 11 | |
| 2 Dec. |  Heavy rain at times | 35° /23° | 6.6 mm | 11 | |
| 3 Dec. |  Patchy light rain | 34° /23° | 8.3 mm | 11 | |
| 4 Dec. | Sunny | 38° /26° | 0 mm | 12 | |
| 5 Dec. | Sunny | 37° /27° | 0.1 mm | 11 | |
| 6 Dec. |  Moderate rain at times | 36° /26° | 1.1 mm | 11 | |
| 7 Dec. | Sunny | 37° /28° | 0.7 mm | 12 | |
| 8 Dec. |  Partly cloudy | 39° /28° | 0 mm | 12 | |
| 9 Dec. | Partly cloudy | 38° /27° | 0.1 mm | 12 | |
| 10 Dec. | Sunny | 39° /28° | 0 mm | 12 | |
| 11 Dec. | Sunny | 37° /27° | 1 mm | 11 | |
| 12 Dec. | Sunny | 38° /26° | 0 mm | 12 | |
| 13 Dec. | Sunny | 38° /27° | 0 mm | 12 | |
| 14 Dec. | Patchy light drizzle | 38° /28° | 0.2 mm | 12 | |
| 15 Dec. |  Patchy rain possible | 37° /25° | 2.9 mm | 2.4 | |
| 16 Dec. | Sunny | 37° /24° | 0 mm | 3.4 | |
| 17 Dec. | Patchy rain possible | 35° /26° | 3.2 mm | 2.3 | |
| 18 Dec. | Patchy rain possible | 30° /23° | 0.7 mm | 1.6 | |
| 19 Dec. | Patchy rain possible | 31° /25° | 2.1 mm | 2 | |
| 20 Dec. | Patchy rain possible | 37° /27° | 0.8 mm | 10 | |
| 21 Dec. |  Moderate rain | 35° /24° | 5.1 mm | 9 | |
| 22 Dec. | Patchy rain possible | 28° /23° | 0.3 mm | 9 | |
| 23 Dec. | Patchy rain possible | 30° /24° | 4.6 mm | 9 | |
| 24 Dec. | Patchy rain possible | 34° /24° | 1.5 mm | 9 | |
| 25 Dec. | Patchy rain possible | 35° /26° | 0.2 mm | 9 | |
| 26 Dec. | Patchy rain possible | 36° /27° | 0.2 mm | 10 | |
| 27 Dec. | Sunny | 35° /27° | 0 mm | 11 | |
| 28 Dec. | Sunny | 37° /25° | 0 mm | 11 | |
| 29 Dec. | Sunny | 39° /27° | 0 mm | 12 | |
| 30 Dec. | Sunny | 41° /27° | 0 mm | 13 | |
| 31 Dec. | Sunny | 39° /27° | 0 mm | 12 | |
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Important Notice
Our weather forecast for Mount Isa in December 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 December - FAQ
What are the expected maximum and minimum temperatures in Mount Isa during December?
With daytime temperatures soaring above 38° and not dropping much below 27° at night, December in Mount Isa is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Mount Isa during December?
In December, Mount Isa can expect light to moderate rainfall, totaling 30.7 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Mount Isa during December?
The average wind speed in Mount Isa during December is 28 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Mount Isa
Explore the daily rainfall trends and prepare for Mount Isas December weather 💧
Typically, Mount Isa has 5 rainy days in December with a total of 30.7 mm of rainfall.
UV exposure in Mount Isa during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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