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Weather & Climate in Northam, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Northam enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 78°F in January while summers reach 52°F in July / relatively mild seasonal variation. The area gets 342 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 12.7 inches (drier than the 38-inch national average). The city sits at an elevation of 509 feet.
Temperature
78°F Jan (26°C)
52°F Jul (11°C)
| Annual Average | 64.8°F |
| 20% above US avg | |
| January Average | 78°F (26°C) |
| July Average | 52°F (11°C) |
| Sunny Days | 342 days/yr |
Geography
| Elevation | 509 ft (155 m) |
| Area | 10.4 sq mi (26.8 km²) |
| Population Density | 630/sq mi |
| Coordinates | -31.6493°N, 116.6742°W |
| Timezone | Australia/Perth |
Precipitation & Snow
Air Quality
Earthquake History
145 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 | 31 km | 7 km |
| Mar 5, 2002 | 113 km E of Moora, Australia | M4.8 | 135 km | 10 km |
| Sep 28, 2001 | 133 km E of Moora, Australia | M4.7 | 147 km | 10 km |
| Mar 23, 2002 | 117 km E of Moora, Australia | M4.6 | 138 km | 10 km |
| Mar 30, 2002 | 110 km E of Moora, Australia | M4.6 | 134 km | 10 km |
| Aug 18, 2024 | 62 km WNW of Merredin, Australia | M4.6 | 105 km | 8 km |
| Mar 27, 1997 | 37 km W of Merredin, Australia | M4.6 | 117 km | 10 km |
| Dec 20, 1996 | 61 km N of Toodyay, Australia | M4.5 | 72 km | 10 km |
| Jun 12, 2005 | 98 km E of Moora, Australia | M4.5 | 126 km | 8 km |
| Aug 18, 2024 | 70 km WNW of Merredin, Australia | M4.4 | 103 km | 10 km |
| Jun 12, 2005 | 102 km NNE of Northam, Australia | M4.3 | 103 km | 2 km |
| Jun 30, 2007 | 107 km NNE of Northam, Australia | M4.2 | 108 km | 8 km |
| Mar 27, 2025 | 57 km WNW of Merredin, Australia | M4.2 | 110 km | 10 km |
| Mar 16, 2005 | 122 km NW of Merredin, Australia | M4.2 | 137 km | 0 km |
| Jun 25, 2009 | 122 km NW of Merredin, Australia | M4.2 | 137 km | 0 km |
| Jan 24, 2022 | 29 km NE of Narrogin, Australia | M4.2 | 145 km | 10 km |
| Oct 2, 2024 | 50 km NW of Merredin, Australia | M4.1 | 120 km | 10 km |
| Aug 21, 2022 | 117 km NW of Merredin, Australia | M4.1 | 118 km | 10 km |
| Aug 31, 1997 | 40 km WNW of Merredin, Australia | M4.1 | 115 km | 10 km |
| Jul 27, 2025 | 32 km NW of Merredin, Australia | M4.1 | 134 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 | 63 mph | 261 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (26°C) | 0.5 in | Warmest |
| February | 78°F (26°C) | 0.6 in | |
| March | 74°F (23°C) | 0.7 in | |
| April | 67°F (20°C) | 0.9 in | |
| May | 60°F (16°C) | 2.0 in | |
| June | 55°F (13°C) | 2.7 in | |
| July | 52°F (11°C) | 2.8 in | Coldest, Wettest |
| August | 53°F (12°C) | 2.2 in | |
| September | 57°F (14°C) | 1.5 in | |
| October | 61°F (16°C) | 0.9 in | |
| November | 68°F (20°C) | 0.6 in | |
| December | 74°F (23°C) | 0.4 in | Driest |
Northam has a seasonal temperature swing of 27°F / from 52°F in July to 78°F in January. Total annual precipitation is 15.7 inches, with July being the wettest month (2.8") and December the driest (0.4").