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Weather & Climate in Hillarys, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hillarys enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 71°F in January while summers reach 61°F in July / relatively mild seasonal variation. The area gets 352 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 18.8 inches (drier than the 38-inch national average). The city sits at an elevation of 49 feet.
Temperature
71°F Jan (22°C)
61°F Jul (16°C)
| Annual Average | 66.1°F |
| 22% above US avg | |
| January Average | 71°F (22°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 352 days/yr |
Geography
| Elevation | 49 ft (15 m) |
| Area | 2.5 sq mi (6.4 km²) |
| Population Density | 4,534/sq mi |
| Coordinates | -31.8070°N, 115.7405°W |
| Timezone | Australia/Perth |
Precipitation & Snow
Air Quality
Earthquake History
16 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Jan 17, 1990 | 30 km E of Northam, Australia | M5.2 | 120 km | 7 km |
| Dec 20, 1996 | 61 km N of Toodyay, Australia | M4.5 | 120 km | 10 km |
| Mar 24, 2003 | 36 km NE of York, Australia | M4.0 | 128 km | 5 km |
| Jan 20, 1993 | 45 km E of Northam, Australia | M3.9 | 135 km | 33 km |
| Mar 15, 1999 | 35 km NE of York, Australia | M3.7 | 126 km | 10 km |
| Jan 5, 1998 | 41 km ENE of Northam, Australia | M3.6 | 132 km | 10 km |
| Apr 23, 1992 | 68 km NNE of Toodyay, Australia | M3.3 | 135 km | 10 km |
| Jun 2, 2005 | 52 km ENE of Northam, Australia | M3.0 | 143 km | 0 km |
| May 6, 2005 | 5 km NW of Bullsbrook, Australia | M2.8 | 28 km | 2 km |
| Jul 18, 2003 | 42 km N of Toodyay, Australia | M2.8 | 104 km | 0 km |
| Mar 15, 2005 | 46 km NE of Boddington, Australia | M2.7 | 131 km | 0 km |
| Jun 12, 2002 | 30 km SSE of Beverley, Australia | M2.7 | 142 km | 10 km |
| May 12, 2005 | 31 km ENE of Beverley, Australia | M2.6 | 139 km | 5 km |
| Apr 15, 2005 | 10 km SSW of York, Australia | M2.5 | 94 km | 2 km |
| Jun 14, 2002 | 30 km SSE of Beverley, Australia | M2.5 | 140 km | 10 km |
| Aug 11, 2003 | 25 km ENE of Beverley, Australia | M2.5 | 135 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2021 | Seroja | Category 1 | 63 mph | 268 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 71°F (22°C) | 0.5 in | |
| February | 76°F (25°C) | 0.7 in | Warmest |
| March | 74°F (23°C) | 0.7 in | |
| April | 68°F (20°C) | 1.4 in | |
| May | 62°F (17°C) | 3.8 in | |
| June | 58°F (14°C) | 5.6 in | |
| July | 61°F (16°C) | 6.0 in | Wettest |
| August | 57°F (14°C) | 4.4 in | Coldest |
| September | 59°F (15°C) | 2.9 in | |
| October | 62°F (17°C) | 1.7 in | |
| November | 67°F (19°C) | 0.9 in | |
| December | 72°F (22°C) | 0.3 in | Driest |
Hillarys has a seasonal temperature swing of 20°F / from 57°F in August to 76°F in February. Total annual precipitation is 28.9 inches, with July being the wettest month (6.0") and December the driest (0.3").