Willetton weather in August

In August, Willetton sees average daytime highs of 17°C and overnight lows near 9°C, with 87 mm of rain across 10.7 wet days and about 10.8 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 17°C through the month. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of August to 11 h 18 min by month's end. Set against the rest of the year, August is Willetton's 11th-clearest and 8th-windiest month. For the whole year in context, see Willetton's year-round climate.

Daytime high
17°
11th warmest
Overnight low
2nd coldest
Rainfall
87 mm
10.7 wet days
Daylight
10 h 48 min
6:56 AM – 5:45 PM
Cloud cover
50%
11th clearest
Wind
13 km/h
8th windiest
Solar energy
3.48 kWh/m²
Travel score
5.7
out of 10

Willetton is suburb of Perth, Western Australia.

Density
2,214/km²
people per km²

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 17°C through the month.

A typical August day in Willetton reaches about 17°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 20°C. Set against its neighbours, August runs on par with July and about 2°C cooler than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1179
2179
3179
4179
5179
6179
7179
8179
9179
10179
11179
12179
13179
14179
15179
16179
17179
18179
19179
20179
21189
22189
23189
24189
25189
26189
27189
28189
29189
30189
31189

Willetton weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 18°192.113.95.7
Feb31° / 19°171.713.25.7
Mar29° / 17°182.712.27.0
Apr25° / 14°26411.28.0
May21° / 11°62710.47.1
Jun18° / 87109.96.0
Jul17° / 9611.610.15.3
Aug17° / 8710.710.85.7
Sep19° / 608.711.86.4
Oct22° / 11°29512.87.8
Nov26° / 14°22413.68.1
Dec29° / 16°111.914.17.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 29% of August, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
25941
35941
45842
55743
65743
75743
85743
95743
105743
115743
125743
135842
145941
155941
166040
176040
186238
196238
206238
216337
226337
236337
246337
256337
266337
276337
286337
296337
306337
316238

Chance of precipitation in August

Any precipitation

Willetton gets around 87 mm of rain over 10.7 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 35% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
538
638
738
838
937
1037
1136
1236
1335
1434
1534
1633
1733
1832
1932
2032
2131
2231
2331
2432
2532
2632
2733
2833
2933
3034
3134

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1964
2964
3964
4964
5964
6964
7964
8964
9964
10964
11964
12964
13964
14964
15964
16964
17964
18964
19964
20964
21964
22964
23964
24964
25964
26964
27964
28964
29964
30964
31964

Wind in August

Winds average 13 km/h in August.

Across August, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 24 min at the start of August to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over August. Sunrise moves from 7:10 AM to 6:38 AM, and sunset from 5:35 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.47:105:35
210.47:095:36
310.57:095:36
410.57:085:37
510.57:075:38
610.57:065:38
710.67:055:39
810.67:045:40
910.67:035:40
1010.67:025:41
1110.77:015:42
1210.77:005:42
1310.76:595:43
1410.86:585:44
1510.86:575:44
1610.86:565:45
1710.86:555:46
1810.96:545:46
1910.96:535:47
2010.96:525:48
2111.06:505:48
2211.06:495:49
2311.06:485:50
2411.16:475:50
2511.16:465:51
2611.16:445:52
2711.26:435:52
2811.26:425:53
2911.26:415:54
3011.26:395:54
3111.36:385:55

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.48 kWh/m².

For context, solar energy here swings from a low near 2.55 kWh/m² to a high of 8.36 kWh/m² in December across the year — August's 3.48 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
33.0Moderate
43.0Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.2Moderate
93.2Moderate
103.2Moderate
113.3Moderate
123.3Moderate
133.4Moderate
143.4Moderate
153.4Moderate
163.5Moderate
173.5Moderate
183.6Moderate
193.6Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.8Moderate
243.8Moderate
253.8Moderate
263.9Moderate
273.9Moderate
283.9Moderate
294.0Moderate
304.0Bright
314.0Bright
Planning a trip in August

Hazard calendar for Willetton

In seasonPeak

In August, Willetton sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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

Willetton's rainy season runs May–September, when most of the year's rain falls.

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

Is August a good time to visit Willetton?

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

5.7
Sightseeing
9th-best month of the year
1.5
Beach & pool
11th-best month of the year

August is a reasonable time to visit Willetton for sightseeing.

What to pack for Willetton in August

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

In August, Willetton sees daytime highs around 17°C and nights near 9°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Willetton in August

The nearest coast averages about 19°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 26 km away) is warmest in February at about 22°C and coldest in September near 19°C.

It's comfortable for a long swim from Nov 26 to Jul 9 — about 7.4 months when the water holds above 20°C.

18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar22Refreshing
Apr22Refreshing
May22Refreshing
Jun21Refreshing
Jul20Cool
Aug19Cool
Sep19Cool
Oct19Cool
Nov20Cool
Dec21Refreshing

UV index in Willetton in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Willetton peaks around December 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeDec 23UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar11Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep8Very high
Oct9Very high
Nov10Extreme
Dec13Extreme

Air quality in Willetton 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 Willetton is worst in May — around 18 µg/m³ PM2.5 (moderate), about 4.4× the cleanest month (December, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodMay 1517 µg/m³Dec 185 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar5Good
Apr10Good
May18Moderate
Jun8Good
Jul6Good
Aug7Good
Sep15Moderate
Oct15Moderate
Nov10Good
Dec4Good
Location & terrain

Where is Willetton?

Willetton sits at 32.1°S, 115.9°E, 22 m above sea level, in Australia. The nearest listed city is Canning Vale, 3.0 km away.

Topography around Willetton

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

Within 3 km, the terrain around Willetton has only modest variations in elevation — a maximum elevation change of 46 m around an average of 19 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 311 m; within 80 km, significant variations in elevation — a maximum elevation change of 567 m.

The land around Willetton is covered by artificial surfaces (75%) within 3 km, artificial surfaces (48%) and trees (24%) within 16 km, and trees (43%) and water (31%) within 80 km.

3 km
46 m
16 km
311 m
80 km
567 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Canning Vale 3.0 km · Thornlie 6.0 km · Perth 11 km · Gosnells 12 km · Dianella 18 km · Morley 18 km · Scarborough 21 km · Byford 22 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 Willetton (-32.0525°, 115.8878°, elevation 22 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).