Mount Isa in december: average Weather, Temperature and Climate
Weather in Mount Isa in december 2026
The weather in Mount Isa in december comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
good weather UV index: 8
Weather at 6am
81°F
Clear/Sunny
71% of time
16%
10%
4%
Weather at 12pm
97°F
Clear/Sunny
58% of time
25%
14%
3%
Weather at 6pm
94°F
Clear/Sunny
54% of time
24%
17%
5%
Weather at 3am
81°F
69%
16%
10%
5%
Evolution of daily average temperature and precipitation in Mount Isa in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Mount Isa in december.
The climate of Mount Isa in december is good
the weather in Mount Isa in december is wet (with 3.5in of rainfall over 5 days). The situation is deteriorating compared to the previous month since in november there is an average of 2.5in of rainfall over 3 days.
The climate is very warm in that area this month. The thermometer averaged maximum of 99°F. In the morning the temperature drops to 81°F. Thus, the mean temperature average on this month of december in Mount Isa is 90°F. These temperatures are far removed from those records observed in Mount Isa in the month of december with a maximum record of 110°F in 2009 and a minimum record of 63°F in 2010. You can plan to have 86°F or more for all the month.
On this month of december, day length in Mount Isa is generally 13:23. The sun rises at 05:56 and sunset is at 19:19.
With a good climate, december is a good time to go in Mount Isa in Australia.
Seasonal average climate and temperature of Mount Isa in december
Check below seasonal norms These statistics are compiled from the weather statements earlier years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 90°F | ||||
| Highest temperature | 99°F | ||||
| Lowest temperature | 81°F | ||||
| Highest record temperature | 110°F (2009) | ||||
| Lowest record temperature | 63°F (2010) | ||||
| Number of days at +86°F | 30 day(s) (97%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 21km/h | ||||
| Wind temperature | 81°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.5in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 3.1in (2010) | ||||
| Other climate data | |||||
| Humidity | 49% | ||||
| Visibility | 9.73km | ||||
| Cloud cover | 21% | ||||
| UV index | 8 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:56 | ||||
| Time of sunset | 19:19 | ||||
| Length of day | 13:23 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last december?
Here is the day by day recorded weather in Mount Isa in december 2025:
74°F to 94°F
72°F to 92°F
74°F to 95°F
81°F to 101°F
81°F to 97°F
85°F to 103°F
83°F to 103°F
86°F to 103°F
83°F to 101°F
81°F to 103°F
85°F to 103°F
85°F to 104°F
85°F to 103°F
85°F to 99°F
83°F to 99°F
76°F to 97°F
79°F to 97°F
76°F to 90°F
79°F to 92°F
79°F to 94°F
76°F to 90°F
76°F to 83°F
76°F to 86°F
74°F to 79°F
74°F to 86°F
74°F to 86°F
74°F to 83°F
72°F to 74°F
68°F to 72°F
70°F to 72°F
72°F to 81°F
Map: other cities in Australia in december
Cities near Mount Isa:
| Normanton in december | tolerable weather |
| Hughenden in december | good weather |
| Alice Springs in december | perfect weather |
| Innisfail in december | good weather |
| Townsville in december | good weather |
| Cairns in december | good weather |
| Trinity Beach in december | good weather |
| Port Douglas in december | good weather |
| Cape Tribulation in december | good weather |
| Daly Waters in december | tolerable weather |
| Cooktown in december | good weather |
| Oodnadatta in december | perfect weather |
Click over cities on the map for information about the weather in december.
Mount Isa
perfect weather
good
tolerable
bad
very bad
Weather data for Mount Isa in december:
Weather data for Mount Isa for december are derived from an average of the weather forecast since 2009 in Mount Isa. There is a margin of error and these forecasts are to be considered as general information only. The weather in Mount Isa can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Mount Isa.