Mount Isa weather in August

In August, Mount Isa sees average daytime highs of 27°C and overnight lows near 12°C, with 2 mm of rain across 0.4 wet days and about 11.3 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 87% of the time in August, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of August to 11 h 36 min by month's end. Set against the rest of the year, August is Mount Isa's 1st-clearest and 4th-windiest month. For the whole year in context, see Mount Isa's year-round climate.

Daytime high: 27°; 10th warmest
Overnight low: 12°; 3rd coldest
Rainfall: 2 mm; 0.4 wet days
Daylight: 11 h 18 min; 7:08 AM – 6:25 PM
Cloud cover: 12%; 1st clearest
Wind: 18 km/h; 4th windiest
Solar energy: 5.61 kWh/m²
Travel score: 8.8; out of 10

Mount Isa is city in Queensland, Australia.

Air quality: Good; PM10 29.5 µg/m³ · 2019
Founded: 1923

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← July Mount Isa year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical August day in Mount Isa reaches about 27°C in the afternoon and slips back to 12°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, August runs about 2°C warmer than July and about 4°C cooler than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	25	26	26	26	26	26	26	26	26	26	26	26	26	26	27	27	27	27	27	27	27	27	28	28	28	28	28	28	29	29	29
Avg low (°C)	11	11	11	11	11	11	11	11	11	11	11	11	11	12	12	12	12	12	12	12	12	13	13	13	13	13	13	14	14	14	14

	Avg high (°C)	Avg low (°C)
1	25	11
2	26	11
3	26	11
4	26	11
5	26	11
6	26	11
7	26	11
8	26	11
9	26	11
10	26	11
11	26	11
12	26	11
13	26	11
14	26	12
15	27	12
16	27	12
17	27	12
18	27	12
19	27	12
20	27	12
21	27	12
22	27	13
23	28	13
24	28	13
25	28	13
26	28	13
27	28	13
28	28	14
29	29	14
30	29	14
31	29	14

How August really feels in Mount Isa

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mount Isa weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	35° / 24°	104	10.1	13.1	2.4
Feb	35° / 24°	87	8.9	12.7	2.8
Mar	34° / 22°	61	4.5	12.1	3.5
Apr	32° / 19°	14	1.3	11.5	5.3
May	27° / 15°	7	1	11	8.2
Jun	25° / 11°	6	0.8	10.8	9.2
Jul	25° / 10°	2	0.5	10.9	9.4
Aug	27° / 12°	2	0.4	11.3	8.8
Sep	31° / 16°	6	0.9	11.9	5.9
Oct	34° / 20°	12	1.8	12.5	3.8
Nov	36° / 22°	27	5	13	2.5
Dec	36° / 24°	62	7.5	13.2	2.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 87% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 6% of August, with mostly cloudy or overcast conditions the remaining 7%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	94	94	94	94	94	94	94	94	94	93	93	93	93	93	93	93	93	92	92	92	92	92	92	92	92	92	92	92	92	92	92
Cloudier (%)	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	8	8

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	94	6
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	93	7
16	93	7
17	93	7
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	92	8
27	92	8
28	92	8
29	92	8
30	92	8
31	92	8

Chance of precipitation in August

Any precipitation

Mount Isa gets around 2 mm of rain over 0.4 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 3% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	3	3	3

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	2
25	2
26	2
27	2
28	2
29	3
30	3
31	3

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	99	99	99	99	99	99	99	100	100	100	100	100	100	99	99	99	99	99	99	99	99	99	99	99	98	98	98	98	98	98	97
Comfortable (%)	1	1	1	1	1	1	1	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	3

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	98	2
26	98	2
27	98	2
28	98	2
29	98	2
30	98	2
31	97	3

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 18 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	18	light breeze
2	18	light breeze
3	18	light breeze
4	18	light breeze
5	18	light breeze
6	18	light breeze
7	18	light breeze
8	18	light breeze
9	18	light breeze
10	18	light breeze
11	18	light breeze
12	18	light breeze
13	18	light breeze
14	18	light breeze
15	18	light breeze
16	18	light breeze
17	18	light breeze
18	18	light breeze
19	18	light breeze
20	18	light breeze
21	18	light breeze
22	18	light breeze
23	18	light breeze
24	18	light breeze
25	18	light breeze
26	18	light breeze
27	18	light breeze
28	18	light breeze
29	18	light breeze
30	18	light breeze
31	18	light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 hours at the start of August to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over August. Sunrise moves from 7:17 AM to 6:55 AM, and sunset from 6:19 PM to 6:29 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.0	11.1	11.1	11.1	11.1	11.1	11.1	11.2	11.2	11.2	11.2	11.2	11.2	11.3	11.3	11.3	11.3	11.3	11.3	11.4	11.4	11.4	11.4	11.4	11.4	11.5	11.5	11.5	11.5	11.5	11.6
Sunrise (AM)	7:17	7:16	7:16	7:15	7:15	7:14	7:13	7:13	7:12	7:12	7:11	7:10	7:10	7:09	7:08	7:08	7:07	7:06	7:05	7:04	7:04	7:03	7:02	7:01	7:00	7:00	6:59	6:58	6:57	6:56	6:55
Sunset (PM)	6:19	6:20	6:20	6:21	6:21	6:21	6:22	6:22	6:22	6:23	6:23	6:23	6:24	6:24	6:24	6:25	6:25	6:25	6:26	6:26	6:26	6:27	6:27	6:27	6:27	6:28	6:28	6:28	6:28	6:29	6:29

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.0	7:17	6:19
2	11.1	7:16	6:20
3	11.1	7:16	6:20
4	11.1	7:15	6:21
5	11.1	7:15	6:21
6	11.1	7:14	6:21
7	11.1	7:13	6:22
8	11.2	7:13	6:22
9	11.2	7:12	6:22
10	11.2	7:12	6:23
11	11.2	7:11	6:23
12	11.2	7:10	6:23
13	11.2	7:10	6:24
14	11.3	7:09	6:24
15	11.3	7:08	6:24
16	11.3	7:08	6:25
17	11.3	7:07	6:25
18	11.3	7:06	6:25
19	11.3	7:05	6:26
20	11.4	7:04	6:26
21	11.4	7:04	6:26
22	11.4	7:03	6:27
23	11.4	7:02	6:27
24	11.4	7:01	6:27
25	11.4	7:00	6:27
26	11.5	7:00	6:28
27	11.5	6:59	6:28
28	11.5	6:58	6:28
29	11.5	6:57	6:28
30	11.5	6:56	6:29
31	11.6	6:55	6:29

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.61 kWh/m².

For context, solar energy here swings from a low near 4.45 kWh/m² to a high of 7.41 kWh/m² in November across the year — August's 5.61 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.1	5.2	5.2	5.2	5.3	5.3	5.3	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7	5.7	5.8	5.8	5.8	5.8	5.8	5.9	5.9	5.9	6.0	6.0	6.0
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense

	Solar energy (kWh/m²)	Level
1	5.1	Bright
2	5.2	Bright
3	5.2	Bright
4	5.2	Bright
5	5.3	Bright
6	5.3	Bright
7	5.3	Bright
8	5.4	Bright
9	5.4	Bright
10	5.4	Bright
11	5.5	Bright
12	5.5	Bright
13	5.5	Bright
14	5.5	Bright
15	5.6	Bright
16	5.6	Bright
17	5.6	Bright
18	5.7	Bright
19	5.7	Bright
20	5.7	Bright
21	5.8	Bright
22	5.8	Bright
23	5.8	Bright
24	5.8	Bright
25	5.8	Bright
26	5.9	Bright
27	5.9	Bright
28	5.9	Bright
29	6.0	Bright
30	6.0	Bright
31	6.0	Intense

Planning a trip in August

Is August a good time to visit Mount Isa?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.8

Sightseeing

3rd-best month of the year

8.8

Beach & pool

1st-best month of the year

August is one of the better times to visit Mount Isa for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mount Isa in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Mount Isa sees daytime highs around 27°C and nights near 12°C. Worth packing: light clothes and sun protection.

light clothessun protection

UV index in Mount Isa in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mount Isa peaks around February 8 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	16	16	14	11	8	7	7	9	10	13	14	14
Level	Extreme	Extreme	Extreme	Extreme	Very high	High	High	Very high	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	16	Extreme
Feb	16	Extreme
Mar	14	Extreme
Apr	11	Extreme
May	8	Very high
Jun	7	High
Jul	7	High
Aug	9	Very high
Sep	10	Extreme
Oct	13	Extreme
Nov	14	Extreme
Dec	14	Extreme

Air quality in Mount Isa in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Mount Isa is worst in October — around 26 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (March, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	14	11	11	17	19	18	17	19	22	26	20	24
Level	Moderate	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	14	Moderate
Feb	11	Good
Mar	11	Good
Apr	17	Moderate
May	19	Moderate
Jun	18	Moderate
Jul	17	Moderate
Aug	19	Moderate
Sep	22	Moderate
Oct	26	Moderate
Nov	20	Moderate
Dec	24	Moderate

Location & terrain

Where is Mount Isa?

Mount Isa sits at 20.7°S, 139.5°E, 363 m above sea level, in Australia. The nearest listed city is Alice Springs, 666 km away.

Topography around Mount Isa

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mount Isa.

Within 3 km, the terrain around Mount Isa has only modest variations in elevation — a maximum elevation change of 243 m around an average of 364 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 341 m; within 80 km, significant variations in elevation — a maximum elevation change of 433 m.

The land around Mount Isa is covered by grassland (33%), artificial surfaces (29%) and bare terrain (20%) within 3 km, grassland (80%) within 16 km, and grassland (84%) within 80 km.

3 km

243 m

grassland 33%

16 km

341 m

grassland 80%

80 km

433 m

grassland 84%

treesshrubsgrasslandartificial surfacesbare terrainwater

← July Mount Isa year-round climate September →Best places to visit in August

August weather nearby: Alice Springs 666 km · Kirwan 771 km · Townsville 781 km · Cairns 783 km · Port Douglas 786 km · Airlie Beach 961 km · Uluru 1,005 km · Mackay 1,005 km

Australia travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type I; 230 V · 50 Hz
Prices: ≈ 90% of US; price level, 2025
GDP per capita: $65,130; 2025
Happiness: 6.9 / 10; World Happiness, 2025
Homicide rate: 0.9; per 100k, 2023
Road deaths: 4.9; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mount Isa (-20.7252°, 139.4973°, elevation 363 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	25	11
2	26	11
3	26	11
4	26	11
5	26	11
6	26	11
7	26	11
8	26	11
9	26	11
10	26	11
11	26	11
12	26	11
13	26	11
14	26	12
15	27	12
16	27	12
17	27	12
18	27	12
19	27	12
20	27	12
21	27	12
22	27	13
23	28	13
24	28	13
25	28	13
26	28	13
27	28	13
28	28	14
29	29	14
30	29	14
31	29	14

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	94	6
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	93	7
16	93	7
17	93	7
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	92	8
27	92	8
28	92	8
29	92	8
30	92	8
31	92	8

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	2
25	2
26	2
27	2
28	2
29	3
30	3
31	3

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	98	2
26	98	2
27	98	2
28	98	2
29	98	2
30	98	2
31	97	3

	Avg high (°C)	Avg low (°C)
1	25	11
2	26	11
3	26	11
4	26	11
5	26	11
6	26	11
7	26	11
8	26	11
9	26	11
10	26	11
11	26	11
12	26	11
13	26	11
14	26	12
15	27	12
16	27	12
17	27	12
18	27	12
19	27	12
20	27	12
21	27	12
22	27	13
23	28	13
24	28	13
25	28	13
26	28	13
27	28	13
28	28	14
29	29	14
30	29	14
31	29	14

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	94	6
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	93	7
16	93	7
17	93	7
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	92	8
27	92	8
28	92	8
29	92	8
30	92	8
31	92	8

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	2
25	2
26	2
27	2
28	2
29	3
30	3
31	3

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	98	2
26	98	2
27	98	2
28	98	2
29	98	2
30	98	2
31	97	3

	Avg high (°C)	Avg low (°C)
1	25	11
2	26	11
3	26	11
4	26	11
5	26	11
6	26	11
7	26	11
8	26	11
9	26	11
10	26	11
11	26	11
12	26	11
13	26	11
14	26	12
15	27	12
16	27	12
17	27	12
18	27	12
19	27	12
20	27	12
21	27	12
22	27	13
23	28	13
24	28	13
25	28	13
26	28	13
27	28	13
28	28	14
29	29	14
30	29	14
31	29	14

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	94	6
10	93	7
11	93	7
12	93	7
13	93	7
14	93	7
15	93	7
16	93	7
17	93	7
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	92	8
27	92	8
28	92	8
29	92	8
30	92	8
31	92	8

	Rain chance (%)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	2
24	2
25	2
26	2
27	2
28	2
29	3
30	3
31	3

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	98	2
26	98	2
27	98	2
28	98	2
29	98	2
30	98	2
31	97	3