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Weather & Climate in Mannum, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mannum enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 72°F in January while summers reach 51°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 13.8 inches (drier than the 38-inch national average). The city sits at an elevation of 108 feet.
Temperature
72°F Jan (22°C)
51°F Jul (11°C)
| Annual Average | 61.4°F |
| 14% above US avg | |
| January Average | 72°F (22°C) |
| July Average | 51°F (11°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 108 ft (33 m) |
| Area | 828.3 sq mi (2,145.4 km²) |
| Population Density | 3/sq mi |
| Coordinates | -34.9153°N, 139.3033°W |
| Timezone | Australia/Adelaide |
Precipitation & Snow
Air Quality
Earthquake History
15 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Mar 5, 1997 | 5 km ESE of Burra, Australia | M4.8 | 140 km | 10 km |
| May 14, 2020 | 15 km WSW of Burra, Australia | M4.4 | 144 km | 7 km |
| Aug 17, 1991 | 21 km NE of Kapunda, Australia | M4.1 | 82 km | 33 km |
| Mar 5, 2022 | 3 km SW of Mount Barker, Australia | M4.0 | 46 km | 10 km |
| Feb 1, 2017 | 9 km NW of Murray Bridge, Australia | M3.9 | 19 km | 10 km |
| Apr 16, 2010 | 2 km N of Macclesfield, Australia | M3.8 | 50 km | 0 km |
| Jan 22, 1999 | 36 km SSE of Burra, Australia | M3.8 | 106 km | 10 km |
| Oct 18, 2011 | 3 km ESE of Hawthorndene, Australia | M3.3 | 59 km | 17 km |
| May 23, 2004 | 17 km NE of Nuriootpa, Australia | M3.3 | 64 km | 18 km |
| Mar 11, 2000 | 16 km NE of Balaklava, Australia | M3.0 | 121 km | 10 km |
| Mar 29, 2022 | 3 km ESE of Macclesfield, Australia | M3.0 | 50 km | 10 km |
| Jul 8, 2007 | 26 km SW of Normanville, Australia | M2.8 | 133 km | 10 km |
| Sep 22, 2003 | 11 km SSE of Normanville, Australia | M2.7 | 110 km | 10 km |
| Aug 3, 2007 | 23 km SSE of Burra, Australia | M2.7 | 120 km | 0 km |
| Jun 12, 2007 | 26 km E of Angaston, Australia | M2.5 | 46 km | 27 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1902 | KANGAROO ISLAND | Earthquake | - | - | 119 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 72°F (22°C) | 0.8 in | |
| February | 72°F (22°C) | 0.7 in | Warmest, Driest |
| March | 68°F (20°C) | 0.8 in | |
| April | 62°F (17°C) | 1.1 in | |
| May | 57°F (14°C) | 1.3 in | |
| June | 52°F (11°C) | 1.4 in | |
| July | 51°F (11°C) | 1.4 in | Coldest |
| August | 52°F (11°C) | 1.6 in | Wettest |
| September | 56°F (13°C) | 1.5 in | |
| October | 61°F (16°C) | 1.5 in | |
| November | 65°F (18°C) | 1.0 in | |
| December | 69°F (21°C) | 0.9 in |
Mannum has a seasonal temperature swing of 21°F / from 51°F in July to 72°F in February. Total annual precipitation is 13.8 inches, with August being the wettest month (1.6") and February the driest (0.7").