Karratha weather in August

In August, Karratha sees average daytime highs of 25°C and overnight lows near 19°C, with 3 mm of rain across 0.5 wet days and about 11.3 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 90% 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 Karratha's 4th-clearest and 11th-windiest month. For the whole year in context, see Karratha's year-round climate.

Daytime high
25°
10th warmest
Overnight low
19°
2nd coldest
Rainfall
3 mm
0.5 wet days
Daylight
11 h 18 min
6:38 AM – 5:55 PM
Cloud cover
10%
4th clearest
Wind
18 km/h
11th windiest
Solar energy
5.6 kWh/m²
Travel score
9.5
out of 10

Karratha is town in Western Australia.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical August day in Karratha reaches about 25°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, August runs about 1°C warmer than July and about 2°C cooler than September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32418
42418
52418
62418
72418
82418
92518
102518
112518
122518
132518
142518
152518
162518
172518
182518
192519
202519
212519
222519
232519
242519
252519
262519
272519
282519
292519
302619
312619

How August really feels in Karratha

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Karratha weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 27°453.913.15.0
Feb32° / 28°814.912.74.8
Mar32° / 28°683.412.14.8
Apr31° / 26°251.711.55.8
May28° / 22°252.6117.8
Jun25° / 19°312.710.88.7
Jul24° / 18°121.310.99.3
Aug25° / 19°30.511.39.5
Sep27° / 20°20.211.99.1
Oct29° / 23°10.212.57.7
Nov30° / 25°10.2136.8
Dec31° / 26°201.213.25.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 90% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 5% of August, with mostly cloudy or overcast conditions the remaining 6%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1937
2937
3937
4937
5937
6946
7946
8937
9937
10937
11937
12937
13946
14946
15946
16946
17946
18955
19955
20955
21955
22955
23955
24964
25964
26964
27964
28964
29964
30964
31964

Chance of precipitation in August

Any precipitation

Karratha gets around 3 mm of rain over 0.5 wet days in August. 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 2% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
12
22
32
42
52
62
72
82
92
102
112
122
132
142
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311

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 66% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1692182
2692092
3692092
4692092
5692092
66820102
76919102
86819112
96819112
106918112
116918112
126818122
136818122
146818122
156818122
166818122
176818122
187018111
196919111
206820111
216721111
226622111
236523111
246424111
256325111
266127111
275928121
285829121
295630131
305530132
315331142

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.

05101520151015202531
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
3118light 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 6:47 AM to 6:26 AM, and sunset from 5:50 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:475:50
211.16:475:50
311.16:465:51
411.16:465:51
511.16:455:52
611.16:455:52
711.16:445:52
811.26:445:53
911.26:435:53
1011.26:425:53
1111.26:425:54
1211.26:415:54
1311.26:405:54
1411.36:405:55
1511.36:395:55
1611.36:385:55
1711.36:375:56
1811.36:375:56
1911.36:365:56
2011.46:355:57
2111.46:345:57
2211.46:345:57
2311.46:335:57
2411.46:325:58
2511.46:315:58
2611.56:305:58
2711.56:295:59
2811.56:285:59
2911.56:285:59
3011.56:275:59
3111.66:266:00

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.6 kWh/m².

For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 8.16 kWh/m² in November across the year — August's 5.6 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.2Bright
55.2Bright
65.2Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
266.0Bright
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.2Intense
Planning a trip in August

Hazard calendar for Karratha

In seasonPeak

None of Karratha's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Karratha sits in the South Indian Ocean cyclone belt; the season peaks January–March.

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

Is August a good time to visit Karratha?

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

9.5
Sightseeing
1st-best month of the year
8.3
Beach & pool
7th-best month of the year

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

What to pack for Karratha in August

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

In August, Karratha sees daytime highs around 25°C and nights near 19°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Karratha in August

The nearest coast averages about 23°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 km away) is warmest in March at about 30°C and coldest in August near 23°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb30Tropical
Mar30Tropical
Apr29Tropical
May27Warm
Jun24Warm
Jul23Refreshing
Aug23Refreshing
Sep24Refreshing
Oct25Warm
Nov27Warm
Dec28Warm

UV index in Karratha in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Karratha peaks around December 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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 highExtremeDec 23UV 15Jun 19UV 7
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr10Very high
May8Very high
Jun7High
Jul7Very high
Aug8Very high
Sep10Extreme
Oct12Extreme
Nov13Extreme
Dec15Extreme

Air quality in Karratha 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 Karratha is worst in December — around 49 µg/m³ PM2.5 (poor), about 7.0× the cleanest month (July, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModeratePoorDec 2048 µg/m³Jul 207 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb31Moderate
Mar23Moderate
Apr11Good
May9Good
Jun8Good
Jul7Good
Aug7Good
Sep11Good
Oct20Moderate
Nov32Moderate
Dec49Poor
Location & terrain

Where is Karratha?

Karratha sits at 20.7°S, 116.8°E, 20 m above sea level, in Australia. The nearest listed city is Port Hedland, 190 km away.

BroomeGeraldtonKalgoorlieEllenbrookLandsdaleBallajuraDuncraig

Topography around Karratha

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

Within 3 km, the terrain around Karratha has only modest variations in elevation — a maximum elevation change of 123 m around an average of 23 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, significant variations in elevation — a maximum elevation change of 377 m.

The land around Karratha is covered by grassland (54%) within 3 km, grassland (51%) and water (31%) within 16 km, and grassland (48%) and water (44%) within 80 km.

3 km
123 m
16 km
170 m
80 km
377 m
shrubsgrasslandartificial surfacesbare terrainwaterwetlandmangroves
August weather nearby: Port Hedland 190 km · Broome 645 km · Geraldton 922 km · Kalgoorlie 1,205 km · Ellenbrook 1,230 km · Landsdale 1,235 km · Ballajura 1,238 km · Duncraig 1,238 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 Karratha (-20.7376°, 116.8463°, elevation 20 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).