YozoraAtlasyo·zo·ra (夜空) n. [Jap.] night sky

How dark is the sky in South Australia?

Sky darkness for 14 towns and parks in South Australia, worked out from NASA satellite images of light at night (2025). 9 of them have skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Gawler Ranges National Park (21.95, Bortle 2), the brightest Adelaide (17.89, Bortle 8). Milky Way season in South Australia runs February to October: on moonless nights the bright core stands clear of the horizon, climbing to about 90° at its highest.

19 Bortle class, 1 pristine to 9 city center park or dark-sky place city

Numbers like 21.95 or 16.97 are the brightness of the sky overhead on a clear, moonless night, in mag/arcsec². The scale runs backwards: a lower number means a brighter sky, from about 22 for a natural sky to about 17 in a city center.
How the readings are made

NASA satellite night-lights map of South Australia with every place marked

Darkest skies in South Australia

Among the places on this site. Plenty of land between them is just as dark, with no town or park to name it by.

Brightest city skies in South Australia

All 14 places in South Australia

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.

Adelaide8 Arkaroola2 Carrickalinga4 Coorong National Park2 Flinders Chase National Park2 Gawler5 Gawler Ranges National Park2 Ikara-Flinders Ranges National Park2 Kati Thanda-Lake Eyre National Park2 Mount Barker5 Mount Gambier5 Naracoorte Caves National Park3 Whyalla5 the River Murray Dark Sky Reserve3