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Weather & Climate in Dalwallinu, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dalwallinu enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 80°F in January while summers reach 53°F in July / relatively mild seasonal variation. The area gets 311 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 13.9 inches (drier than the 38-inch national average). The city sits at an elevation of 1,125 feet.
Temperature
80°F Jan (27°C)
53°F Jul (12°C)
| Annual Average | 66.1°F |
| 22% above US avg | |
| January Average | 80°F (27°C) |
| July Average | 53°F (12°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 1,125 ft (343 m) |
| Area | 264.2 sq mi (684.2 km²) |
| Population Density | 3/sq mi |
| Coordinates | -30.2805°N, 116.6602°W |
| Timezone | Australia/Perth |
Precipitation & Snow
Air Quality
Earthquake History
147 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Mar 5, 2002 | 113 km E of Moora, Australia | M4.8 | 57 km | 10 km |
| Sep 28, 2001 | 133 km E of Moora, Australia | M4.7 | 73 km | 10 km |
| Aug 18, 2024 | 62 km WNW of Merredin, Australia | M4.6 | 146 km | 8 km |
| Mar 30, 2002 | 110 km E of Moora, Australia | M4.6 | 53 km | 10 km |
| Mar 5, 2009 | 149 km NNW of Merredin, Australia | M4.6 | 107 km | 0 km |
| Mar 23, 2002 | 117 km E of Moora, Australia | M4.6 | 58 km | 10 km |
| Mar 5, 2002 | 129 km NNW of Merredin, Australia | M4.6 | 86 km | 10 km |
| Dec 20, 1996 | 61 km N of Toodyay, Australia | M4.5 | 81 km | 10 km |
| Jun 12, 2005 | 98 km E of Moora, Australia | M4.5 | 47 km | 8 km |
| Sep 15, 2019 | 133 km NNW of Merredin, Australia | M4.4 | 119 km | 10 km |
| Aug 18, 2024 | 70 km WNW of Merredin, Australia | M4.4 | 136 km | 10 km |
| Jan 31, 2009 | 147 km NNW of Merredin, Australia | M4.3 | 110 km | 0 km |
| Jun 12, 2005 | 102 km NNE of Northam, Australia | M4.3 | 72 km | 2 km |
| Jun 30, 2007 | 107 km NNE of Northam, Australia | M4.2 | 72 km | 8 km |
| Mar 27, 2025 | 57 km WNW of Merredin, Australia | M4.2 | 149 km | 10 km |
| Jan 31, 2009 | 146 km NNW of Merredin, Australia | M4.2 | 108 km | 2 km |
| Mar 16, 2005 | 122 km NW of Merredin, Australia | M4.2 | 86 km | 0 km |
| Jun 25, 2009 | 122 km NW of Merredin, Australia | M4.2 | 86 km | 0 km |
| May 1, 2005 | 146 km NNW of Merredin, Australia | M4.1 | 121 km | 3 km |
| Aug 21, 2022 | 117 km NW of Merredin, Australia | M4.1 | 87 km | 10 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 | 75 mph | 122 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 80°F (27°C) | 0.4 in | Driest |
| February | 80°F (27°C) | 0.7 in | Warmest |
| March | 76°F (24°C) | 1.1 in | |
| April | 68°F (20°C) | 0.9 in | |
| May | 61°F (16°C) | 1.9 in | |
| June | 55°F (13°C) | 2.2 in | Wettest |
| July | 53°F (12°C) | 2.2 in | Coldest |
| August | 54°F (12°C) | 1.7 in | |
| September | 58°F (14°C) | 1.0 in | |
| October | 63°F (17°C) | 0.7 in | |
| November | 70°F (21°C) | 0.5 in | |
| December | 76°F (24°C) | 0.5 in |
Dalwallinu has a seasonal temperature swing of 27°F / from 53°F in July to 80°F in February. Total annual precipitation is 13.9 inches, with June being the wettest month (2.2") and January the driest (0.4").