Aurora australis in Punta Arenas tonight

Why Punta Arenas needs a stronger storm than Ushuaia

Punta Arenas sits at roughly 53 degrees magnetic latitude on the Strait of Magellan - measurably further from the South Magnetic Pole than Ushuaia, just across the strait in Argentina. That difference matters: where Ushuaia can produce a display at a Kp of 3 to 4 on the index that measures geomagnetic activity from 0 (quiet) to 9 (extreme), Punta Arenas generally needs 4 to 5. The May 2024 storm that reached G5, the top of the geomagnetic storm scale, produced a rare and widely photographed aurora across southern Chile - the kind of event residents described as unlike anything in living memory.

What Punta Arenas offers instead of a low threshold is a reason to be in the region regardless: it is the main gateway to Torres del Paine National Park and to Antarctic cruise departures, so a trip built around it has plenty to justify the visit on the nights the aurora doesn't show.

When to go

The window runs roughly May to August, the austral winter, when nights are long enough for anything to show. July gives the most darkness. This is the reverse of Patagonia's tourist high season of November to March, when short summer nights rule out aurora entirely no matter how strong the storm. The September equinox brings a secondary lift in geomagnetic activity as nights are still reasonably long, so it is worth a look at the shoulder of the season too.

Getting there and getting around

There's no direct flight from Europe or North America - you fly into Santiago (SCL) first, then take a domestic connection of around three and a half hours to Carlos Ibáñez del Campo International Airport (PUQ), served by LATAM and Sky Airline. You can compare flights to Punta Arenas from your home airport. The airport sits about 20 minutes from the city centre; you can book an airport transfer in advance rather than relying on a taxi rank. A hire car is worth having once you're there - the dark-sky spots south of town are a straightforward drive, and the Patagonian weather rewards being able to leave at short notice.

Where to watch

San Isidro Lighthouse, 75 km south at the tip of the Brunswick Peninsula, is the most cited spot: the southernmost lighthouse on the American mainland, with an open horizon over the Strait of Magellan and no settlement light behind it. The final stretch is on foot after the road ends. Pali Aike National Park, a volcanic field near the Argentine border, is further out at 196 km but equally dark and reachable by gravel road. Torres del Paine, rated the darkest sky classification by Chile's astrophotography community, is genuinely spectacular but 312 km north - realistically a multi-day addition to a Patagonia itinerary rather than a single aurora-watching night from Punta Arenas.

If you'd rather have someone else handle the logistics and read the conditions for you, you can browse aurora and Patagonia tours to see what's running during your dates.

What to expect, honestly

Punta Arenas is not a dedicated aurora destination the way Ushuaia or Yellowknife is, and it shouldn't be sold as one. You're relying on a stronger-than-average storm to reach this far from the pole, and most nights it won't happen. What you get in exchange, on the nights it does, is a display over one of the most remote and dramatic landscapes on the continent, with Torres del Paine and Antarctic-gateway logistics giving the trip a reason to exist either way. Check the live forecast above before committing an evening, dress for Patagonian wind and cold at any time of year, and treat the aurora as a genuine bonus rather than the reason for the trip.