AI-generatedMount Isa at a glance
- Best time
- May – Aug
- Warmest month
- Dec · 38°
- Sunshine a year
- 3,060 h
- Rain a year
- 418 mm
- Climate
- Tropical
- Time zone
- UTC+10
- Elevation
- 363 m
Climate in Mount Isa
Mount Isa has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. December is the warmest month with average highs of 38 °C, while June is the coolest at 25 °C. With around 3,060 hours of sunshine a year, Mount Isa is very sunny; October is the sunniest month with 9.5 hours a day.
Holiday weather through the year
Best time to visit Mount Isa
The best time to visit Mount Isa is from May to August. For sightseeing, day trips and hiking, conditions are most comfortable from June to August. From October to March it can get very hot, with highs of up to 38 °C. The wettest month is January with 99 mm of precipitation.
Mount Isa through the seasons
How the weather changes over the seasons, with averages for each.
Mount Isa in spring
Sep – Nov
Fair
- 32–37 °C by day
- 9.2 h of sun a day
- 8 rainy days in all
Mount Isa in summer
Dec – Feb
Poor
- 36–38 °C by day
- 8.0 h of sun a day
- 26 rainy days in all
Mount Isa in autumn
Mar – May
Good
- 28–35 °C by day
- 8.1 h of sun a day
- 8 rainy days in all
Mount Isa in winter
Jun – Aug
Excellent
- 25–28 °C by day
- 8.2 h of sun a day
- 2 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun – Aug
15–28 °C and not too much rain
Peak heat
Oct – Mar
Highs of 33 °C or more
Find your perfect month
Tell us what you like and we rate every month in Mount Isa for you.
Your best months: June – July
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: May – August
Keep in mindPeak heat
A typical day in October
- Morning, 08:00: about 24°
- Midday, 13:00: about 35°
- Afternoon, 16:00: about 35°
- Evening, 20:00: about 27°
- Night, 23:00: about 23°
06:1118:44
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:58–06:41 · evening 18:14–18:57
- Blue hour
- Morning 05:49–05:58 · evening 18:57–19:06
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Mount Isa compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs rise from about 34° at the start of the month to 36° at the end. The days get 0.6 h longer.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 34° | 36° |
| Night-time low | 16° | 20° |
| Daylight | 12.3 h | 12.8 h |
What is the weather like in Mount Isa in October?
In October, Mount Isa is very hot: daytime highs average 35 °C, and nights cool down to about 19 °C. With around 9.5 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 12 mm in total. On about 29 days the thermometer climbs to 30 °C or more. All in all, October is a so-so month for a holiday in Mount Isa.
More details for October
- Daylight
- 12 h 32 min06:11 – 18:44
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 20 %on averageAll months
- Hot days
- 29 days30 °C or moreAll months
- Time zone
- UTC+10offset from UTC
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Compare two months in Mount Isa
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Mount Isa: score 97 against 50. In July, days are 9 °C cooler than in October. July has one rainy day fewer. The sun shines 2 hours less a day in July.
| Month | October | July |
|---|---|---|
| Holiday weather score | 50 | 97better |
| Daytime high | 35° | 26° |
| Night-time low | 19° | 9° |
| Sunshine | 9.5 hbetter | 8.0 h |
| Rainy days | 2 | 1better |
| Rainfall | 12 mm | 5 mm |
| Muggy days | 1 | 0better |
Based on the climate averages 1996–2025.
Mount Isa month by month
The typical weather for every month at a glance.
32January37° · 7.7 h
In January, Mount Isa is very hot: daytime highs average 37 °C, and even at night it stays warm at around 24 °C. The sun shines for around 7.7 hours a day. Rain is frequent, with about 10 rainy days and 99 mm in total. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is not an ideal month for a holiday in Mount Isa.
Mount Isa in January37February36° · 7.7 h
In February, Mount Isa is very hot: daytime highs average 36 °C, and even at night it stays warm at around 23 °C. The sun shines for around 7.7 hours a day. Rain falls on about 8 days, adding up to 87 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is not an ideal month for a holiday in Mount Isa.
Mount Isa in February43March35° · 7.8 h
In March, Mount Isa is very hot: daytime highs average 35 °C, and even at night it stays warm at around 22 °C. The sun shines for around 7.8 hours a day. Rain falls on about 5 days, adding up to 76 mm. On about 27 days the thermometer climbs to 30 °C or more. All in all, March is a so-so month for a holiday in Mount Isa.
Mount Isa in March58April33° · 8.4 h
In April, Mount Isa is hot: daytime highs average 33 °C, and nights cool down to about 19 °C. The sun shines for around 8.4 hours a day. It hardly ever rains. On about 25 days the thermometer climbs to 30 °C or more. All in all, April is a so-so month for a holiday in Mount Isa.
Mount Isa in April87May28° · 8.0 h
In May, Mount Isa is hot: daytime highs average 28 °C, and nights cool down to about 14 °C. The sun shines for around 8.0 hours a day. It hardly ever rains. On about 10 days the thermometer climbs to 30 °C or more. All in all, May is an excellent month for a holiday in Mount Isa.
Mount Isa in May96June25° · 7.8 h
In June, Mount Isa is warm: daytime highs average 25 °C, and nights cool down to about 10 °C. The sun shines for around 7.8 hours a day. It hardly ever rains. All in all, June is an excellent month for a holiday in Mount Isa.
Mount Isa in June97July26° · 8.0 h
In July, Mount Isa is warm: daytime highs average 26 °C, and nights cool down to about 9 °C. The sun shines for around 8.0 hours a day. It hardly ever rains. All in all, July is an excellent month for a holiday in Mount Isa.
Mount Isa in July93August28° · 8.8 h
In August, Mount Isa is hot: daytime highs average 28 °C, and nights cool down to about 10 °C. The sun shines for around 8.8 hours a day. It hardly ever rains. On about 8 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Mount Isa.
Mount Isa in August61September32° · 9.0 h
In September, Mount Isa is hot: daytime highs average 32 °C, and nights cool down to about 14 °C. With around 9.0 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 23 days the thermometer climbs to 30 °C or more. All in all, September is a good month for a holiday in Mount Isa.
Mount Isa in September50October35° · 9.5 h
In October, Mount Isa is very hot: daytime highs average 35 °C, and nights cool down to about 19 °C. With around 9.5 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 12 mm in total. On about 29 days the thermometer climbs to 30 °C or more. All in all, October is a so-so month for a holiday in Mount Isa.
Mount Isa in October48November37° · 9.1 h
In November, Mount Isa is very hot: daytime highs average 37 °C, and even at night it stays warm at around 22 °C. With around 9.1 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 31 mm. On about 29 days the thermometer climbs to 30 °C or more. All in all, November is a so-so month for a holiday in Mount Isa.
Mount Isa in November41December38° · 8.6 h
In December, Mount Isa is very hot: daytime highs average 38 °C, and even at night it stays warm at around 23 °C. The sun shines for around 8.6 hours a day. Rain falls on about 7 days, adding up to 69 mm. On about 29 days the thermometer climbs to 30 °C or more. All in all, December is a so-so month for a holiday in Mount Isa.
Mount Isa in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Mount Isa
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
PleasantOctober: nights around 19°. Ideal for sleeping, often with the window open. Muggy on about 1 day (dew point 18 °C or more).
The coolest nights are in July (9°), the warmest in January (24°). Tropical nights of 20 °C and more are the rule from November to March; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in April and in October. It is muggy (dew point 18 °C or more) on about 58 days a year, mostly from January to February.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 32 | 37° | 24° | 7.7 h | 10 | 99 |
| FebruaryFeb | 37 | 36° | 23° | 7.7 h | 8 | 87 |
| MarchMar | 43 | 35° | 22° | 7.8 h | 5 | 76 |
| AprilApr | 58 | 33° | 19° | 8.4 h | 1 | 18 |
| MayMay | 87 | 28° | 14° | 8.0 h | 1 | 6 |
| JuneJun | 96 | 25° | 10° | 7.8 h | 1 | 6 |
| JulyJul | 97 | 26° | 9° | 8.0 h | 1 | 5 |
| AugustAug | 93 | 28° | 10° | 8.8 h | 1 | 3 |
| SeptemberSep | 61 | 32° | 14° | 9.0 h | 1 | 7 |
| OctoberOct | 50 | 35° | 19° | 9.5 h | 2 | 12 |
| NovemberNov | 48 | 37° | 22° | 9.1 h | 5 | 31 |
| DecemberDec | 41 | 38° | 23° | 8.6 h | 7 | 69 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
20.73° S, 139.50° E · 363 m · Australia/Brisbane
Sunshine hours in Mount Isa
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 9.5 of 12.5 hours of daylight in Mount Isa, 76 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Mount Isa: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Mount Isa has about 2 rainy days with 12 mm of rain in total.
UV index in Mount Isa
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 12 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in January (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Mount Isa
How breezy and how cloudy Mount Isa is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Mount Isa typically peaks at 25 km/h during the day: Beaufort 4, moderate breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 20 % of the sky over Mount Isa: mostly clear, with about 9.5 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Mount Isa
How often the day gets hot in Mount Isa (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Mount Isa has about 29 hot days, with an average daytime high of 35 °C: often hot. Avoid the midday sun, look for shade and drink plenty.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Mount Isa
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Mount Isa in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Mount Isa has its best school-holiday weather during the summer holidays (score 94) and its weakest during the Christmas holidays (score 37).
- 53
Easter holidays
Mar – Apr
Fair
- 33 °C by day
- 8.2 h of sun a day
- 3 rainy days a month
Keep in mind: Peak heat
- 89
May half-term
May – Jun
Excellent
- 28 °C by day
- 8.0 h of sun a day
- 1 rainy day a month
- 94
Summer holidays
Jul – Aug
ExcellentBest holidays
- 27 °C by day
- 8.5 h of sun a day
- 1 rainy day a month
Good for: Sightseeing & walks
- 50
October half-term
Oct
Fair
- 35 °C by day
- 9.5 h of sun a day
- 2 rainy days a month
Keep in mind: Peak heat
- 37
Christmas holidays
Dec – Jan
Poor
- 37 °C by day
- 8.2 h of sun a day
- 9 rainy days a month
Keep in mind: Peak heat
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 18 h 45 min
- Distance
- 15,150 km
- Time zone
- UTC+10
- Jet lag
- About 9 days (9 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Mount Isa compared
Put Mount Isa side by side with another destination.
Mount Isa vs Winton
In October the holiday weather in Mount Isa and Winton is about equally good (score 50 vs 50). During the day Winton is 1 °C warmer than Mount Isa.
| in October | Mount Isa | Winton |
|---|---|---|
| Holiday weather score | 50 | 50 |
| Daytime high | 35° | 36° |
| Sunshine | 10 h | 10 h |
| Rainy days | 2 | 2 |
| Best time | May – Aug | May – Aug |
Through the year
Australia in October: the best places
In October, Mount Isa ranks 26 among the 31 nearest destinations in this country.
- Broken Hill26°100
- 2Cooktown30°26°99
- 3Bowen29°25°99
- 4Airlie Beach (Whitsundays)30°25°99
- 5Port Douglas31°26°98
- 6Thursday Island31°27°97
- 7Cairns30°26°96
- 8Yeppoon28°24°94
- 26Mount IsaThis page35°50
Near Mount Isa
Other destinations close by.
Places with a climate like Mount Isa
Destinations whose weather through the year is closest to Mount Isa's – good alternatives.
Frequently asked questions about Mount Isa
When is the best time to visit Mount Isa?
The best time to visit Mount Isa is from May to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Mount Isa?
December is the warmest month, with average highs of 38 °C and nights around 23 °C. June is the coolest month at 25 °C.
When does it rain most in Mount Isa?
The wettest month is January with 99 mm of precipitation. The driest month is August with 3 mm.
How many hours of sunshine does Mount Isa get?
Mount Isa gets around 3,060 hours of sunshine a year. The sunniest month is October with 9.5 hours a day; in January there are 7.7 hours a day.
What time zone is Mount Isa in?
Mount Isa is on UTC+10 all year.
How long is the flight from London to Mount Isa?
A nonstop flight from London to Mount Isa takes about 18 h 45 min, for a straight-line distance of about 15,150 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Mount Isa?
Mount Isa has its best school-holiday weather during the summer holidays (score 94) and its weakest during the Christmas holidays (score 37). Holiday ratings (0–100): Easter holidays 53, May half-term 89, summer holidays 94, October half-term 50, Christmas holidays 37.