ClimateForecastDecemberJanuary >>

Mount Isa Climate by Month

The temperature in Mount Isa can vary greatly throughout the year. The temperatures shift from very hot to warm. It maintains relatively low levels of precipitation throughout the seasons. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Depending on the time of the year, temperatures range from very hot to comfortable in Mount Isa. On average, daytime temperatures range from a very hot 38°C in December to a comfortable 26°C in July. Nighttime temperatures can drop, with averages reaching 10°C in July.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Mount Isa has a relatively dry climate with low precipitation, averaging 419 mm of rainfall annually. The seasons in Mount Isa, bring significant changes in precipitation. The wettest month, January, receives high rainfall, with an average of 109 mm of precipitation. This rainfall is distributed across 10 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 2.3 mm over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Mount Isa in Australia

During the months of June and July you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Mount Isa?
    December has an average maximum temperature of 38°C and is the warmest month of the year.
  • Which is the coldest month in Mount Isa?
    The coldest month is July with an average maximum temperature of 26°C.
  • Which is the wettest month in Mount Isa?
    January tops the wettest month list with 109 mm of rainfall.
  • Which is the driest month in Mount Isa?
    August is the driest month with 2 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Mount Isa

    Thu   Dec 12
    38°C | 22°C
    S 22 km/h
    almost clear and no rain

    almost clear and no rain

    Fri   Dec 13
    39°C | 20°C
    S 18 km/h
    clear and no rain

    clear and no rain

    Sat   Dec 14
    40°C | 22°C
    S 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain