Aurora Australis: The Southern Lights and What Makes Them Different to Chase

Every aurora display in the northern sky has a mirror image in the southern hemisphere. Aurora australis — the southern lights — occurs simultaneously with aurora borealis along the same magnetic field lines, producing the same physical phenomenon at both poles at the same time. The science is identical; the geography of viewing is where things get considerably more complicated.

What Aurora Australis Is

Aurora australis is aurora occurring in the southern hemisphere, produced by the same mechanism as its northern counterpart — electrons accelerated along magnetic field lines by field-aligned currents colliding with atmospheric gases in the ionosphere. The name combines aurora with the Latin word for south, australis.

Because aurora borealis and aurora australis are conjugate phenomena — linked along shared magnetic field lines — a geomagnetic storm producing active northern lights over Alaska is simultaneously producing active southern lights over Antarctica. The displays mirror each other in real time, which satellite imagery occasionally captures dramatically during major storm events.

What helped me picture the conjugate relationship: imagine Earth's magnetic field lines as strings connecting the two hemispheres. When electrons flow down one string in the north, an equal and opposite current flows up the corresponding string from the south. The light produced at each end is a mirror image of the other — same colors, similar structure, same timing.

Where Aurora Australis Can Be Seen

The southern auroral oval sits at high southern latitudes — but most of that oval lies over Antarctica and the Southern Ocean, where there are no permanent human settlements and access is extremely limited. The few accessible land masses beneath the oval include southern Tasmania, the southern tip of New Zealand's South Island, and Tierra del Fuego at the southern tip of South America.

During major geomagnetic storms, the southern oval expands equatorward just as the northern one does, bringing aurora australis within reach of a wider range of southern hemisphere locations — southern Australia, New Zealand's North Island, and southern Argentina have all recorded sightings during significant G4 and G5 events.

For most aurora travelers, the northern lights remain the more accessible target. The auroral zone in the north passes through destinations with developed tourism infrastructure — Alaska, Iceland, Norway, Canada — while the southern equivalent is largely inaccessible. The exception is Antarctica itself, where expedition voyages occasionally offer aurora australis viewing as part of the experience.

What Aurora Australis Means for Photographers

For photographers specifically seeking aurora australis, the logistical challenge is significant. The most reliable viewing locations — coastal Tasmania, Southland New Zealand, Ushuaia in Argentina — sit at the southern edge of viable access and require strong geomagnetic conditions to produce reliable displays. Patience and flexibility are even more essential than for northern lights photography, since the accessible viewing window beneath the southern oval is narrower.

The technical approach is identical to northern lights photography — wide-angle lenses, exposures of 3–15 seconds depending on activity, high ISO, tracking Bz and Kp in real time. The difference is that southern hemisphere aurora photographers are working with a smaller pool of high-quality viewing sites and less developed forecasting infrastructure tailored to their specific locations.

For travelers whose primary goal is seeing aurora in a well-supported, logistically accessible environment, the northern lights remain the more reliable option. Our Northern Lights Tour in Fairbanks positions guests beneath the northern oval with multiple nights in the field and guides tracking conditions each evening.

Return to the full Northern Lights Glossary to continue through the Aurora Visual Forms and Phenomena section.