Mount Isa weather in April

In April, Mount Isa sees average daytime highs of 32°C and overnight lows near 19°C, with 14 mm of rain across 1.3 wet days and about 11.5 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 30°C by the end. The sky is clear or mostly clear about 68% of the time in April, and the air most often feels dry.

Daylight stretches from about 11 h 48 min at the start of April to 11 h 18 min by month's end. Set against the rest of the year, April is Mount Isa's 7th-clearest and 2nd-windiest month. For the whole year in context, see Mount Isa's year-round climate.

Daytime high
32°
7th warmest
Overnight low
19°
6th coldest
Rainfall
14 mm
1.3 wet days
Daylight
11 h 30 min
6:56 AM – 6:28 PM
Cloud cover
30%
7th clearest
Wind
18 km/h
2nd windiest
Solar energy
5.75 kWh/m²
Travel score
5.3
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.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 33°C in the first days to 30°C by the end.

A typical April day in Mount Isa reaches about 32°C in the afternoon and slips back to 19°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 35°C. Set against its neighbours, April runs about 2°C cooler than March and about 4°C warmer than May.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13321
23321
33321
43321
53321
63321
73320
83320
93320
103320
113220
123220
133220
143220
153219
163219
173219
183219
193119
203119
213118
223118
233118
243118
253018
263018
273017
283017
293017
303017

How April really feels in Mount Isa

Once humidity and wind are folded in, April averages 14 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
14
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Mount Isa weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan35° / 24°10410.113.12.4
Feb35° / 24°878.912.72.8
Mar34° / 22°614.512.13.5
Apr32° / 19°141.311.55.3
May27° / 15°71118.2
Jun25° / 11°60.810.89.2
Jul25° / 10°20.510.99.4
Aug27° / 12°20.411.38.8
Sep31° / 16°60.911.95.9
Oct34° / 20°121.812.53.8
Nov36° / 22°275132.5
Dec36° / 24°627.513.22.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 19%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17723
27723
37723
47723
57822
67822
77921
88020
98020
108119
118218
128317
138317
148317
158416
168416
178416
188416
198416
208317
218317
228317
238317
248218
258218
268218
278218
288119
298119
308119

Chance of precipitation in April

Any precipitation

Mount Isa gets around 14 mm of rain over 1.3 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 4% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
16
26
36
46
56
66
75
85
95
104
114
124
133
143
153
163
173
183
193
203
213
223
233
243
253
263
273
283
293
303

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
16914872
26914872
37113862
47113862
57213762
67313752
77313752
87412752
97412752
107612642
117711642
127711642
137811641
148010631
158010631
16819631
17829531
18848521
19848521
20858520
21868510
22868510
23877510
24877510
25877510
26887500
27887500
28887500
29887500
30896500

Wind in April

Winds average 18 km/h in April.

Across April, 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.

0510152025151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 48 min at the start of April to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over April. Sunrise moves from 6:52 AM to 7:01 AM, and sunset from 6:41 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:526:41
211.86:526:40
311.86:536:39
411.86:536:39
511.76:536:38
611.76:536:37
711.76:546:36
811.76:546:35
911.76:546:34
1011.66:556:33
1111.66:556:32
1211.66:556:31
1311.66:566:31
1411.66:566:30
1511.56:566:29
1611.56:566:28
1711.56:576:27
1811.56:576:26
1911.56:576:26
2011.46:586:25
2111.46:586:24
2211.46:586:23
2311.46:596:22
2411.46:596:22
2511.46:596:21
2611.37:006:20
2711.37:006:19
2811.37:016:19
2911.37:016:18
3011.37:016:17

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.75 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 — April's 5.75 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.0Intense
46.0Intense
56.0Intense
66.0Bright
76.0Bright
86.0Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.5Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
Planning a trip in April

Is April a good time to visit Mount Isa?

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

5.3
Sightseeing
6th-best month of the year
8.3
Beach & pool
4th-best month of the year

April is a reasonable time to visit Mount Isa for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mount Isa in April

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

In April, Mount Isa sees daytime highs around 32°C and nights near 19°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Mount Isa in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 11 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 8UV 16Jun 21UV 7
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme

Air quality in Mount Isa in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1525 µg/m³Mar 1011 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb11Good
Mar11Good
Apr17Moderate
May19Moderate
Jun18Moderate
Jul17Moderate
Aug19Moderate
Sep22Moderate
Oct26Moderate
Nov20Moderate
Dec24Moderate
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.

Alice SpringsKirwanTownsvilleCairnsPort DouglasAirlie BeachUluruMackay

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
16 km
341 m
80 km
433 m
treesshrubsgrasslandartificial surfacesbare terrainwater
April 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
none 38%Roman Catholic 20%Protestant 18%other Christian 4%

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).