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Onslow, Australia

Full City Profile

4.2 /5.0
A Great
1,157 Population 16/sq mi density
23 ft Elevation 7 meters
78°F Avg Temperature 25°C
A
Overall
4.2 / 5.0
Strong
B
Economy
3.4 / 5.0
$46,847 median income, 3.3% unemployment
A+
Affordability
5.0 / 5.0
$135,200 home value, $676/mo rent
Onslow has a warm climate with an average annual temperature of 78°F (26°C). Winters average 87°F in January while summers reach 66°F in July. The area gets 314 sunny days per year. Annual precipitation totals 12.1 inches. The area receives 0.0 inches of snow annually.

Temperature

87°F Jan (30°C) 66°F Jul (19°C)
Annual Average77.6°F
44% above US avg
January Average87°F (30°C)
July Average66°F (19°C)
Sunny Days314 days/yr

Geography

Elevation23 ft (7 m)
Area71.5 sq mi (185.2 km²)
Population Density16/sq mi
Coordinates-21.6376°N, 115.1122°W
TimezoneAustralia/Perth

Precipitation & Snow

Annual Rainfall 12.1"
68% below US avg
Snowfall 0.0"
Wettest Month (Feb) 2.91"
Driest Month (Oct) 0.04"

Air Quality

Earthquake History

3 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.3. Most recent: M4.3 on Feb 10, 2020.

Feb 10, 2020 23 km NNW of Onslow, Australia M4.3 24 km
Mar 19, 2005 127 km W of Dampier, Australia M3.7 137 km
Sep 24, 2000 59 km SSW of Onslow, Australia M3.3 60 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

28 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 4. Most recent: Narelle (2026).

Year Name Category Closest
2026 Narelle Category 4 130 km
2026 Mitchell Category 1 65 km
2025 Sean Category 2 176 km
2020 Damien Category 2 193 km
2019 Veronica Category 4 293 km
2015 Quang Category 3 161 km
2015 Olwyn Category 2 125 km
2014 Christine Category 3 196 km
2011 Bianca Category 2 197 km
2011 Carlos Category 1 300 km
2008 Nicholas Category 1 178 km
2006 Glenda Category 3 7 km
2004 Monty Category 3 78 km
2000 John Category 4 269 km
2000 Steve Category 1 146 km
1999 Vance Category 4 75 km
1998 Tiffany Category 4 272 km
1996 Olivia Category 4 101 km
1996 Frank Category 4 156 km
1996 Jacob Category 2 201 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

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").

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