Northern lights in Argentina tonight
Aurora australis over the Beagle Channel, Ushuaia, Argentina - 55°S magnetic latitude, south-facing dark water horizon, Kp 3 threshold.
How the sky looks right now
Live Kp index from NASA & NOAA, mapped to what it means across Argentina.
Low activity expected. Solar conditions are currently quiet. Chances of aurora visibility are low tonight.
How far south the glow reaches
At Kp 1, the auroral oval pushes down to ~76°N - covering every Argentina town below.
7-day outlook for Argentina
Predicted peak Kp each night, from NOAA's 3-day forecast and the 27-day solar-recurrence model.
Forecasts beyond 3 days are lower confidence - check back nightly as the outlook firms up.
Aurora visibility by town
Each spot lights up at a different Kp threshold thanks to its latitude. It comes down to the clouds.
Viento the condor's tip: Argentine Patagonia is one of the southern hemisphere's best positions for aurora viewing. Ushuaia sits at 55° S - the southern equivalent of Scotland or southern Norway. A Kp of 4 can put aurora on the horizon from Tierra del Fuego, and on a G2 storm night it fills the sky. The austral winter (June to August) gives the long, dark nights.
Three ways to do it
Ushuaia
World's southernmost city - Beagle Channel south-facing dark water horizon, very low threshold
Threshold · Kp 3El Calafate
Perito Moreno Glacier and Lake Argentino as foreground during moderate events
Threshold · Kp 5Why Argentina stands out
Ushuaia at 55°S magnetic latitude is the best aurora australis location in South America outside Antarctica. The Kp threshold of Kp 3–4 is comparable to Queenstown in New Zealand or the Orkney Islands in Scotland - reached several times per month during solar maximum. The Beagle Channel provides a south-facing dark water horizon with the Chilean mountains beyond. Aurora australis has been photographed from Ushuaia regularly during the current solar cycle.
Peak season is June to August, when the austral winter delivers up to 17 hours of darkness per night. The September equinox is statistically the most geomagnetically active period of the year, and May also sees strong activity. Avoid December to February when nights are too short at this latitude.
El Calafate at 50°S needs stronger activity (Kp 5–6) but the Perito Moreno Glacier and Lake Argentino provide extraordinary foregrounds during active events. The Patagonian steppe surrounding both towns gives dark, flat horizons in all directions once away from settlement lights.
Compare Argentina locations tonight
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Up to 8 locations
How often does the aurora appear in Argentina?
Average nights per month the Kp reached Ushuaia's threshold, from 15 years of geomagnetic data (2010–2024).
Southern hemisphere data 2010–2024. Aurora australis peaks in the austral winter (June–August) when nights are longest at 55°S. January–February have minimal darkness - aurora is not visible in summer.
Plan your trip to Argentina
Best window
June to August for maximum darkness at 55°S - mid-winter nights run to 17 hours in Ushuaia. The Beagle Channel waterfront east of town gives the best south-facing dark horizon. Kp 3 events occur several times per month during solar maximum.
How long to stay
Plan 5–7 nights in Ushuaia to give weather a chance to cooperate. Patagonian weather is changeable - clear windows can be narrow. El Calafate adds 2–3 nights for stronger events, with the Perito Moreno Glacier as an extraordinary foreground.
Related pages
Aurora Australis
Southern lights hub with live Kp forecast.
Read →Aurora Australis New Zealand
New Zealand - comparable southern hemisphere aurora destinations.
Read →Aurora Australis Ushuaia Tonight
Ushuaia - best aurora australis in South America.
Read →What Is the Kp Index?
How Kp 3-4 determines aurora australis visibility at 55°S.
Read →Aurora Locations Worldwide
Global aurora forecast hub.
Read →Guides for visiting Argentina
In-depth planning resources for your northern lights trip.
Travel guide Planning How to Plan a Northern Lights Trip
Complete guide to timing, destination choice, packing, and realistic expectations - applies equally to aurora australis.
Science Science What Is the Kp Index?
How Kp 3-4 determines aurora australis visibility at 55°S magnetic latitude.
Travel guide Tours Best Northern Lights Tours 2025
Curated list of aurora tours including Southern Hemisphere destinations.
