Onslow, Australia
Western Australia · Australia
Onslow is a small town in Western Australia, Australia with a population of 829. Elevation: 23 ft (7 m). Average temperature: 78°F (25°C).
Population source: Wikidata (dated census and official estimates), GeoNames. Climate: WorldClim 2.1 normals (1970-2000), NASA POWER. Updated August 2026
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About Onslow
Onslow is a coastal town in the Pilbara region of Western Australia, 1,386 kilometres (861 mi) north of Perth. It had a population of 829 people as at 2021 and is located within the Shire of Ashburton local government area.
People
Climate
| Population | 829 |
| Population Density | 12 / sq mi |
| Elevation | 23 ft (7 m) |
| Coordinates | -21.6376°, 115.1122° |
| Timezone | Australia/Perth |
| Country | 🇦🇺 Australia |
| State / Province | Western Australia |
| Average Temperature | 78°F (25°C) |
| January Average | 87°F (30°C) |
| July Average | 66°F (19°C) |
| Annual Precipitation | 12.1 inches (308 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
About Onslow
Onslow is a small town in Australia (Western Australia) with a population of 829. The city sits at an elevation of 23 feet (7 meters) above sea level. The average annual temperature is 78°F (25°C). Temperatures range from 87°F in January to 66°F in July. Annual precipitation averages 12.1 inches. The timezone is Australia/Perth.
Climate in Onslow
Onslow has an average annual temperature of 25.3°C (78°F). The hottest month is Jan (30.2°C), the coldest is Jul (19.7°C). Average annual precipitation is 324 mm.
Temperature
| Annual Average | 77.6°F |
| 44% above Australia avg | |
| January Average | 87°F (30°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 23 ft (7 m) |
| Area | 71.5 sq mi (185.2 km²) |
| Population Density | 12/sq mi |
| Coordinates | 21.6376°S, 115.1122°E |
| Timezone | Australia/Perth |
Precipitation & Snow
Air Quality
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 87°F (30°C) | 1.2 in | |
| February | 87°F (31°C) | 2.9 in | Warmest, Wettest |
| March | 86°F (30°C) | 1.5 in | |
| April | 82°F (28°C) | 0.9 in | |
| May | 74°F (23°C) | 2.2 in | |
| June | 68°F (20°C) | 1.9 in | |
| July | 66°F (19°C) | 0.7 in | Coldest |
| August | 68°F (20°C) | 0.3 in | |
| September | 72°F (22°C) | 0.1 in | |
| October | 77°F (25°C) | 0.0 in | |
| November | 80°F (27°C) | 0.0 in | Driest |
| December | 84°F (29°C) | 0.4 in |
Onslow has a seasonal temperature swing of 21°F / from 66°F in July to 87°F in February. Total annual precipitation is 12.1 inches, with February being the wettest month (2.9") and November the driest (0.0").
Schools in Onslow
1 public schools (OpenStreetMap data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| Onslow Primary School | - | - | - | - |
Radio Stations near Onslow
0 stations within ~55 km.
| Station | Genre | Quality |
|---|
Museums in Onslow
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Onslow Visitors Centre and Museum |
Hotels in Onslow
1 hotels within city radius - OpenStreetMap data
Restaurants in Onslow
1 restaurants within city radius - OpenStreetMap data
Monuments in Onslow
1 monuments within city radius - OpenStreetMap data
Gas Stations in Onslow
2 gas stations within city radius - OpenStreetMap data
Stadiums & Teams in Onslow
| Team | League | Division |
|---|---|---|
Airports Near Onslow
4 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Minderoo Station Airport | - | Small Airport |
| Onslow Airport | ONS | Small Airport |
| Thevenard Island Airport | - | Small Airport |
| Wilderness Island Airstrip | - | Small Airport |
Post Offices in Onslow
1 post offices.
| Post Office | Address |
|---|---|
| Onslow |
Churches & Religious Organizations in Onslow
1 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| Saint Nicholas Church |
Quick Facts
🇦🇺 About Australia
Public Holidays in Australia
25 public holidays this year
Frequently Asked Questions About Onslow
What is the population of Onslow?
Onslow has a population of 829 residents and is located in Australia. The population density is 12 people per square mile, spread across 71.5 square miles.
What is the weather like in Onslow?
Onslow has a warm climate with an average annual temperature of 78°F (25°C). Winter temperatures average 87°F in January, while summers reach an average of 66°F in July. Annual rainfall totals 12.1 inches.
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