Where in Argentina is best for the aurora?

By geomagnetic latitude, Ushuaia at 45.6°. No town sits at 60 degrees or more, so every town needs some activity.

Which town in Argentina has the longest December night?

Ushuaia, with 4.6 hours of civil night on December 15.

Which town in Argentina has the clearest dark season?

Ushuaia, with 79% mean cloud amount in the months with at least 4 hours of civil night (NASA POWER, 2001 to 2020).

What is the best month for aurora in Argentina?

July for 1 of 1 towns, by civil night times the clear share of the sky. Each town page gives its own month.

1 towns · southern lights

Aurora towns in Argentina

Answer

Glow tracks 1 towns in Argentina, 1 with their own indexed page. On the IGRF-14 dipole they run from Ushuaia at 45.6° to Ushuaia at 45.6°, with a median of 45.6 degrees geomagnetic.

45.6°

median geomagnetic latitude

IGRF-14 dipole, SunCalc, NASA POWER

Where the towns sit

60° geomagnetic or more, no storm needed55° to 60°, G1 or lessbelow 55°, storm needed

Of the 1 indexed towns in Argentina, 1 sit below 55 degrees and need a G2 or stronger storm by NOAA's typical latitudes.

Darkness and cloud

On December 15 the median town gets 4.6 hours of civil night. Ushuaia has the most at 4.6 hours and Ushuaia the least at 4.6. Every town keeps some civil darkness through the June solstice.

NASA POWER's 2001 to 2020 climatology puts median cloud amount in the dark months at 79%. Ushuaia is clearest at 79% and Ushuaia cloudiest at 79%. These are all-hours averages for 1 degree cells, not forecasts.

Best month, town by town

Multiplying civil night by the clear share of the sky, July comes out best for 1 of the 1 towns. SWPC notes a tendency toward larger storms near the equinoxes, which this score does not include.

Every town

1 towns in Argentina, highest geomagnetic latitude first
Town	Region	Dipole	Storm needed	Dec 15 night	Dark-month cloud	Best month
Ushuaia	Tierra del Fuego	45.6°	G2 or more	4.6 h	79%	Jul

* Within 15 km of a larger town with the same rounded figures; its page points to that town. Cloud: NASA POWER mean for months with at least 4 hours of civil night.

Regions

The towns fall in 1 first-level regions. Tierra del Fuego has 1. Regions with at least 5 indexed towns have their own page with three rankings.

Tierra del Fuego1 towns

Questions

Where in Argentina is best for the aurora?: By geomagnetic latitude, Ushuaia at 45.6°. No town sits at 60 degrees or more, so every town needs some activity.
Which town in Argentina has the longest December night?: Ushuaia, with 4.6 hours of civil night on December 15.
Which town in Argentina has the clearest dark season?: Ushuaia, with 79% mean cloud amount in the months with at least 4 hours of civil night (NASA POWER, 2001 to 2020).
What is the best month for aurora in Argentina?: July for 1 of 1 towns, by civil night times the clear share of the sky. Each town page gives its own month.

Sources and verification

GeoNames dump (CC BY 4.0)https://download.geonames.org/export/dump/
IGRF-14, NOAA NCEIhttps://www.ngdc.noaa.gov/IAGA/vmod/coeffs/igrf14coeffs.txt
NASA POWER climatologyhttps://power.larc.nasa.gov/docs/services/api/temporal/climatology/
NOAA SWPC, Aurorahttps://www.swpc.noaa.gov/phenomena/aurora

Quoted figures last checked against their sources on 2026-09-30; next review 2026-12-31. Computed figures come from SunCalc and the IGRF-14 dipole as described in the methodology. Every quote is listed in the sources ledger.