Karratha weather in July

In July, Karratha sees average daytime highs of 24°C and overnight lows near 18°C, with 12 mm of rain across 1.3 wet days and about 10.9 hours of daylight. It is the 12th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 84% of the time in July, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of July to 11 hours by month's end. Set against the rest of the year, July is Karratha's 5th-clearest and 8th-windiest month. For the whole year in context, see Karratha's year-round climate.

Daytime high
24°
12th warmest
Overnight low
18°
1st coldest
Rainfall
12 mm
1.3 wet days
Daylight
10 h 54 min
6:53 AM – 5:44 PM
Cloud cover
16%
5th clearest
Wind
18 km/h
8th windiest
Solar energy
4.56 kWh/m²
Travel score
9.3
out of 10

Karratha is town in Western Australia.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical July day in Karratha reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, July runs on par with June and about 1°C cooler than August.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32418
42418
52418
62418
72418
82418
92418
102418
112418
122418
132418
142418
152418
162418
172418
182418
192418
202418
212418
222418
232418
242418
252418
262418
272418
282418
292418
302418
312418

How July really feels in Karratha

Once humidity and wind are folded in, July 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

July 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 July compares with the rest of the year at a glance. July is the 12th-warmest and 8th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 84% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 6% of July, with mostly cloudy or overcast conditions the remaining 10%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38713
48713
58812
68812
78812
88911
98911
109010
119010
129010
139010
149010
15919
16919
17919
18919
19919
20919
21919
22919
23919
24919
25919
26919
27919
28919
29919
30919
31937

Chance of precipitation in July

Any precipitation

Karratha gets around 12 mm of rain over 1.3 wet days in July. 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%151015202531
Rain chance (%)
16
26
36
46
56
66
76
86
96
106
115
125
135
145
155
165
174
184
194
204
213
223
233
243
252
262
272
282
292
302
312

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
164201051
264201051
36520951
46620950
56620950
66720940
76720940
86720940
96720940
106819940
116919930
126919930
136919930
1468191030
1568191030
1668191030
1768191030
1869191020
1968201020
2068201020
2168201020
2268201020
2367211020
2467211020
2567211020
266821920
276821920
286821920
296821920
306821920
316921820

Wind in July

Winds average 18 km/h in July.

Across July, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light 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 July

DaylightNight

Daylight runs from about 10 h 48 min at the start of July to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over July. Sunrise moves from 6:53 AM to 6:48 AM, and sunset from 5:39 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:535:39
210.86:535:39
310.86:535:39
410.86:535:40
510.86:535:40
610.86:545:40
710.86:535:41
810.86:535:41
910.86:535:41
1010.86:535:42
1110.86:535:42
1210.86:535:42
1310.86:535:43
1410.86:535:43
1510.86:535:43
1610.96:535:44
1710.96:525:44
1810.96:525:45
1910.96:525:45
2010.96:525:45
2110.96:515:46
2210.96:515:46
2310.96:515:47
2410.96:515:47
2511.06:505:47
2611.06:505:48
2711.06:495:48
2811.06:495:48
2911.06:495:49
3011.06:485:49
3111.06:485:50

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.56 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 — July's 4.56 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.8Bright
244.8Bright
254.8Bright
264.9Bright
274.9Bright
284.9Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in July

Hazard calendar for Karratha

In seasonPeak

None of Karratha's seasonal hazards are active in July. 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 July a good time to visit Karratha?

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

9.3
Sightseeing
2nd-best month of the year
7.8
Beach & pool
10th-best month of the year

July 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 July

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

In July, Karratha sees daytime highs around 24°C and nights near 18°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Karratha in July

The nearest coast averages about 23°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 7 — enough to warrant sun protection. 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 July

GoodModeratePoorUnhealthyVery unhealthy

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