Live aurora forecast
Northern lights in Argentina tonight and this season
Live aurora odds for 1 place in Argentina, the Kp each one needs, the season, and the guided tours that pass the catalogue filter. Data: NOAA SWPC, refreshed every 15 minutes.
In short
Northern lights in Argentina need Kp 9 or more at Ushuaia, the best placed of the 1 spot on this page by geomagnetic latitude (-45.7°). The southern lights season in Argentina is the austral winter, with the longest nights from May to August. The probability over each place right now comes from the NOAA OVATION model and refreshes every 15 minutes, with the time of the last fetch shown under each figure.
Key points
- Kp needed: 9 at Ushuaia, by geomagnetic latitude
- 1 place in Argentina with a live OVATION probability on this page
- Aurora probability over Ushuaia refreshes every 15 minutes with the fetch time shown
- No guided aurora tour in the catalogue passes the filter yet
- Kp forecast for the next 3 days in 3-hour slots, from NOAA SWPC
On this page
1Aurora over Ushuaia right now
Data: NOAA SWPC, fetched 10:47 UTC. Aurora probability by destination from the NOAA OVATION model, forecast for 9 Oct, 11:54 UTC. Aurora also needs a dark and clear sky. Kp needed: NOAA puts the edge of the auroral oval at about 66° geomagnetic latitude for Kp 0, 2° closer to the equator per Kp level. Geomagnetic latitude from the WMM2025 dipole pole (NOAA NCEI).
2Why Argentina for the northern lights
Ushuaia is the southernmost city in the world and the Argentine gateway to Antarctica, yet its geomagnetic latitude is lower than Hobart's because the southern magnetic pole sits on the far side of Antarctica. The southern lights are a rare storm-night event here, mostly in the winter months from June to August.
Data: NOAA SWPC, fetched 10:47 UTC. Aurora probability by destination from the NOAA OVATION model, forecast for 9 Oct, 11:54 UTC. Aurora also needs a dark and clear sky. Kp needed: NOAA puts the edge of the auroral oval at about 66° geomagnetic latitude for Kp 0, 2° closer to the equator per Kp level. Geomagnetic latitude from the WMM2025 dipole pole (NOAA NCEI).
3The Kp each place in Argentina needs
The table ranks the places in Argentina by geomagnetic latitude, which is what decides how strong a storm has to be before the auroral oval reaches them. NOAA puts the edge of the oval at about 66 degrees geomagnetic for Kp 0 and moves it 2 degrees toward the equator per Kp level. The full method, including why the figure is conservative, is on the data and method page.
4Kp forecast for the next 3 days
| UTC | Fri 9 Oct | Sat 10 Oct | Sun 11 Oct | Mon 12 Oct |
|---|---|---|---|---|
| 00-03 | 4.00 | 4.67 G1 | 3.00 | |
| 03-06 | 3.67 | 5.67 G2 | ||
| 06-09 | 3.00 | 4.33 | ||
| 09-12 | 3.67 | 3.00 | 3.00 | |
| 12-15 | 4.67 G1 | 1.67 | 2.67 | |
| 15-18 | 5.00 G1 | 2.33 | 2.33 | |
| 18-21 | 6.00 G2 | 2.67 | 2.00 | |
| 21-00 | 5.67 G2 | 2.67 | 2.67 |
Data: NOAA SWPC. Slots before now are NOAA estimates, the rest are predicted values.
5When to see the northern lights in Argentina
The southern lights season in Argentina is the austral winter, with the longest nights from May to August.
6Northern lights tours in Argentina
No guided aurora tour in Argentina passes the catalogue filter of at least 4.3 stars and 20 reviews on Viator right now, so this page shows the live odds and the Kp needed instead.
| Place | Latitude | Geomagnetic latitude | Kp needed | Tours |
|---|---|---|---|---|
| Ushuaia | 54.8° S | -45.7° | 9 | 0 |
Source: NOAA NCEI, World Magnetic Model 2025, geomagnetic pole, checked on 9 Oct 2026.
Latest northern lights posts
Frequently asked questions
Can you see the northern lights in Argentina?
Yes, when the Kp index reaches the level a place needs and the sky is dark and clear. Ushuaia needs Kp 9 or more by the NOAA rule used on this site, and Ushuaia needs Kp 9. The live probability for each place in Argentina is on this page and refreshes every 15 minutes.
What Kp index do you need for the northern lights in Argentina?
Kp 9 or more at every place on this page. The figure comes from geomagnetic latitude: NOAA puts the edge of the auroral oval at about 66 degrees for Kp 0 and moves it 2 degrees toward the equator per Kp level, and it is conservative, because NOAA also notes that aurora is often visible hundreds of kilometres equatorward of that edge. The data and method page explains the calculation and its limits.
When is the best time to see the northern lights in Argentina?
The southern lights season in Argentina is the austral winter, with the longest nights from May to August. Clear, dark nights matter as much as the Kp, so the cloud forecast for the dates decides the real view.
Which place in Argentina has the best aurora odds tonight?
The cards on this page rank the 1 place in Argentina by the NOAA OVATION probability for the current forecast hour. All of them need the same Kp, so the OVATION figure and the local cloud decide, and the cards refresh every 15 minutes.
Are there guided northern lights tours in Argentina?
No guided aurora tour in Argentina passes the catalogue filter of at least 4.3 stars and 20 reviews on Viator right now. The page shows the live odds and the Kp needed so a visit can still be timed with the forecast.
Does Argentina have polar night or midnight sun?
No. Ushuaia lies north of the Antarctic Circle, so every winter night is dark. The limiting factor for the southern lights in Argentina is the Kp index, which only a strong storm pushes high enough.
Sources (3)
Sources
- NOAA SWPC, tips on viewing the aurora, checked on 9 Oct 2026
- NOAA NCEI, World Magnetic Model 2025, geomagnetic pole, checked on 9 Oct 2026
- NOAA SWPC, OVATION aurora forecast model, checked on 9 Oct 2026
Written and maintained by the Kp Forecast editorial team. Independent site, not a space weather agency. Data: NOAA SWPC.
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