Sunniest Cities in Australia
Australia is famous for sunshine, and rightly so. Even its cloudiest cities receive more solar radiation annually than sunny destinations elsewhere on Earth. Some Australian locations, however, are in a league of their own: the inland red centre and arid interior receive virtually uninterrupted sunshine, making them some of the world's best locations for solar energy generation.
This ranking measures solar radiation in megajoules per square metre (MJ/m2), a metric that captures direct sunlight intensity and is directly relevant to solar panel efficiency and plant growth. The higher the value, the more energy the sun delivers to the surface.
Alice Springs receives the most annual solar radiation of any Australian city, making it ideal for solar power generation. The high altitude (600m) and inland location mean minimal cloud cover and maximum direct sunlight. Even cities like Melbourne and Sydney, which feel grey and cloudy to residents, receive enormous amounts of solar energy compared to northern Europe or North America.
Full Rankings
Click any column header to re-sort. Data from Open-Meteo Historical Weather API (2024).
| Rank | City | State | Annual Solar | Avg Daily | Peak Month | Cloudiness |
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Understanding the Rankings
Solar radiation is measured in megajoules per square metre and represents the energy delivered by the sun to a horizontal surface. Alice Springs leads Australia with an annual average of around 22 MJ/m2 per day, translating to roughly 8,000 MJ/m2 annually. This extreme figure reflects zero cloud cover most of the year and high altitude.
For context, Melbourne and Sydney (two of Australia's largest cities) still average around 15-16 MJ/m2 per day, figures that would make them among the sunniest places in the United States. Even Tasmania, Australia's cloudiest state, exceeds most European cities in annual solar exposure.
The gap between Alice Springs and Hobart is striking: the inland gets roughly 50% more solar energy annually. This difference explains why solar power is economically viable in the interior but requires subsidy elsewhere. Over a year, that extra solar exposure adds up to many thousands of extra megajoules per square metre.
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About This Data
All weather data comes from the Open-Meteo Historical Weather API, which combines official weather station observations with reanalysis models to provide accurate data for any location in Australia. Data shown here is from the 2024 calendar year. Production rankings will use 10 to 30-year normals to smooth out year-to-year variation.
This page ranks cities by annual solar radiation (sum of monthly solar irradiance in MJ/m2). 'Avg daily' is annual total divided by 365. 'Peak month' is the month with the highest solar exposure. Solar radiation is a direct input to solar panel efficiency and photosynthesis.