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Weather & Climate in Mount Barker, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mount Barker enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 68°F in January while summers reach 51°F in July / relatively mild seasonal variation. The area gets 293 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 23.7 inches (drier than the 38-inch national average). The city sits at an elevation of 833 feet.
Temperature
68°F Jan (20°C)
51°F Jul (10°C)
| Annual Average | 59.0°F |
| 9% above US avg | |
| January Average | 68°F (20°C) |
| July Average | 51°F (10°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 833 ft (254 m) |
| Area | 188.9 sq mi (489.2 km²) |
| Population Density | 14/sq mi |
| Coordinates | -34.6308°N, 117.6661°W |
| Timezone | Australia/Perth |
Precipitation & Snow
Air Quality
Earthquake History
15 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Aug 5, 2023 | 64 km E of Katanning, Australia | M5.2 | 111 km | 10 km |
| Jan 5, 2023 | Western Australia | M4.7 | 113 km | 11 km |
| May 11, 1998 | 67 km E of Katanning, Australia | M4.5 | 122 km | 10 km |
| Feb 5, 2023 | 24 km WSW of Wagin, Australia | M4.4 | 149 km | 10 km |
| Dec 13, 1991 | 46 km N of Mount Barker, Australia | M4.4 | 46 km | 10 km |
| Jan 22, 1999 | 20 km S of Kojonup, Australia | M4.3 | 85 km | 33 km |
| Feb 1, 2022 | 13 km S of Wagin, Australia | M4.3 | 137 km | 10 km |
| Aug 1, 2019 | 2 km ENE of Mount Barker, Australia | M4.2 | 3 km | 10 km |
| Apr 8, 2009 | 43 km SW of Kojonup, Australia | M4.1 | 90 km | 0 km |
| Oct 26, 1996 | 65 km ESE of Katanning, Australia | M3.7 | 93 km | 10 km |
| Feb 27, 2005 | 67 km E of Katanning, Australia | M3.6 | 127 km | 0 km |
| Apr 18, 2005 | 66 km E of Katanning, Australia | M2.8 | 126 km | 2 km |
| Apr 14, 2005 | 75 km ENE of Katanning, Australia | M2.8 | 140 km | 0 km |
| Mar 14, 2003 | 37 km NNE of Katanning, Australia | M2.5 | 137 km | 1 km |
| Jul 28, 2004 | 69 km E of Katanning, Australia | M2.5 | 129 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 68°F (20°C) | 0.9 in | |
| February | 68°F (20°C) | 0.8 in | Warmest |
| March | 66°F (19°C) | 1.0 in | |
| April | 61°F (16°C) | 1.5 in | |
| May | 56°F (14°C) | 3.0 in | |
| June | 52°F (11°C) | 3.0 in | |
| July | 51°F (10°C) | 3.6 in | Coldest, Wettest |
| August | 51°F (11°C) | 3.0 in | |
| September | 53°F (12°C) | 2.5 in | |
| October | 56°F (13°C) | 2.1 in | |
| November | 61°F (16°C) | 1.6 in | |
| December | 65°F (18°C) | 0.8 in | Driest |
Mount Barker has a seasonal temperature swing of 18°F / from 51°F in July to 68°F in February. Total annual precipitation is 23.7 inches, with July being the wettest month (3.6") and December the driest (0.8").