Can you see the southern lights in Ushuaia in November?

On dark, clear nights with enough activity. 30 of 30 nights at Ushuaia have civil darkness.

How dark is Ushuaia in November?

Ushuaia averages 6.2 hours of civil night a night in November 2026, from 7 h 19 min on the 1st to 5 h 11 min on the last night.

How cloudy is Ushuaia in November?

NASA POWER's 2001 to 2020 climatology gives Ushuaia's 1 degree cell 84% mean cloud in November, against 78% for the whole year. It is an all-hours average, not a forecast.

What is the best night in November 2026 for aurora in Ushuaia?

By darkness and moon alone, Nov 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Ushuaia. Activity on that date will only be known hours ahead.

Is November or December better in Ushuaia?

By civil night times the clear share, November scores 1.0 hours at Ushuaia and December 0.7. November comes out ahead.

Ushuaia · November 2026

Southern lights in Ushuaia in November 2026

Answer

November gives Ushuaia 6.2 hours of civil night on the 15th, the 10th darkest of its 12 months, under 84% mean cloud.

6.2 h

civil night, average night

SunCalc for -54.81, -68.32; NASA POWER; GFZ Kp

November against the rest of the year

0.9

1.5

2.0

2.7

3.8

4.1

3.1

2.5

1.7

1.0

0.7

November cloud at Ushuaia averages 84% in NASA POWER's 2001 to 2020 record, 6 points cloudier than its yearly mean. July is Ushuaia's clearest month at 72%. By civil night times clear sky, November scores 1.0 hours at Ushuaia, 10th of 12. Buffalo, 10,909 km away, averages 75%, clearer by 9 points.

Civil night at Ushuaia starts November at 7 h 19 min and reaches 5 h 11 min by November 30, 2.1 hours shorter. The 10 PM to 2 AM window is fully dark on 10 of 30 nights. The sun never reaches 18 degrees down, so Ushuaia gets no astronomical night in November.

November night by night

November opens toward a new moon on Nov 9, with full moon on Nov 24, in America/Argentina/Ushuaia dates. Ushuaia gets 101 hours of civil night with the moon below the horizon across the month. The best of them for moon-free darkness inside 10 PM to 2 AM: Nov 1 (4 h), Nov 2 (4 h), Nov 3 (4 h).

1
47% lit
6.2 h
2
36% lit
6.3 h
3
26% lit
6.4 h
4
17% lit
6.5 h
5
10% lit
6.6 h
6
5% lit
6.7 h
7
2% lit
6.8 h
8
0% lit
6.8 h
9
1% lit
6.3 h
New
10
3% lit
5.0 h
11
8% lit
3.9 h
12
13% lit
3.1 h
13
20% lit
2.5 h
14
28% lit
2.1 h
15
37% lit
1.8 h
16
47% lit
1.6 h
17
56% lit
1.4 h
18
66% lit
1.2 h
19
76% lit
1.0 h
20
84% lit
0.9 h
21
91% lit
0.7 h
22
97% lit
0.4 h
23
99% lit
0.0 h
24
99% lit
0.3 h
Full
25
97% lit
1.6 h
26
91% lit
2.4 h
27
83% lit
2.9 h
28
73% lit
3.2 h
29
63% lit
3.4 h
30
52% lit
3.5 h

Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.

Activity in past Novembers

No whole Kp puts the average oval edge over Ushuaia by SWPC's rule, so the GFZ record has no threshold to count for November. Ushuaia sits at 45.6 degrees geomagnetic. The lowest NOAA storm level whose typical viewing latitude reaches it is G4 (Kp = 8, including a 9-). Even Kp 9 does not put the average oval edge overhead by SWPC's rule.

November across Argentina

Coming from October (8.7 hours at Ushuaia), November loses darkness, and December brings shorter nights (4.6 hours on the 15th).

Darkness and moon, every night

Ushuaia, November 2026: each night from local noon to the next noon
Night	Civil	Astronomical	Moon-free dark	Moon-free, 10 PM to 2 AM	Moon lit
Sun Nov 1	7 h 19 min	2 h 37 min	6 h 11 min	4 h	47%
Mon Nov 2	7 h 14 min	2 h 24 min	6 h 20 min	4 h	36%
Tue Nov 3	7 h 9 min	2 h 10 min	6 h 26 min	4 h	26%
Wed Nov 4	7 h 4 min	1 h 54 min	6 h 32 min	4 h	17%
Thu Nov 5	6 h 59 min	1 h 36 min	6 h 37 min	4 h	10%
Fri Nov 6	6 h 55 min	1 h 14 min	6 h 44 min	4 h	5%
Sat Nov 7	6 h 50 min	43 min	6 h 50 min	4 h	2%
Sun Nov 8	6 h 45 min	0 min	6 h 45 min	4 h	0%
Mon Nov 9	6 h 40 min	0 min	6 h 16 min	3 h 39 min	1%
Tue Nov 10	6 h 36 min	0 min	5 h	2 h 25 min	3%
Wed Nov 11	6 h 31 min	0 min	3 h 55 min	1 h 22 min	8%
Thu Nov 12	6 h 26 min	0 min	3 h 5 min	35 min	13%
Fri Nov 13	6 h 22 min	0 min	2 h 30 min	2 min	20%
Sat Nov 14	6 h 17 min	0 min	2 h 5 min	0 min	28%
Sun Nov 15	6 h 12 min	0 min	1 h 47 min	0 min	37%
Mon Nov 16	6 h 8 min	0 min	1 h 34 min	0 min	47%
Tue Nov 17	6 h 3 min	0 min	1 h 22 min	0 min	56%
Wed Nov 18	5 h 59 min	0 min	1 h 12 min	0 min	66%
Thu Nov 19	5 h 55 min	0 min	1 h 2 min	0 min	76%
Fri Nov 20	5 h 50 min	0 min	52 min	0 min	84%
Sat Nov 21	5 h 46 min	0 min	40 min	0 min	91%
Sun Nov 22	5 h 42 min	0 min	23 min	0 min	97%
Mon Nov 23	5 h 38 min	0 min	0 min	0 min	99%
Tue Nov 24	5 h 34 min	0 min	18 min	18 min	99%
Wed Nov 25	5 h 30 min	0 min	1 h 34 min	1 h 34 min	97%
Thu Nov 26	5 h 26 min	0 min	2 h 25 min	2 h 25 min	91%
Fri Nov 27	5 h 22 min	0 min	2 h 54 min	2 h 54 min	83%
Sat Nov 28	5 h 18 min	0 min	3 h 11 min	3 h 11 min	73%
Sun Nov 29	5 h 15 min	0 min	3 h 22 min	3 h 16 min	63%
Mon Nov 30	5 h 11 min	0 min	3 h 30 min	3 h 14 min	52%

Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the southern lights in Ushuaia in November?: On dark, clear nights with enough activity. 30 of 30 nights at Ushuaia have civil darkness.
How dark is Ushuaia in November?: Ushuaia averages 6.2 hours of civil night a night in November 2026, from 7 h 19 min on the 1st to 5 h 11 min on the last night.
How cloudy is Ushuaia in November?: NASA POWER's 2001 to 2020 climatology gives Ushuaia's 1 degree cell 84% mean cloud in November, against 78% for the whole year. It is an all-hours average, not a forecast.
What is the best night in November 2026 for aurora in Ushuaia?: By darkness and moon alone, Nov 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Ushuaia. Activity on that date will only be known hours ahead.
Is November or December better in Ushuaia?: By civil night times the clear share, November scores 1.0 hours at Ushuaia and December 0.7. November comes out ahead.

Sources and verification

SunCalchttps://github.com/mourner/suncalc
NASA POWER climatologyhttps://power.larc.nasa.gov/docs/services/api/temporal/climatology/
GFZ Potsdam Kp indexhttps://kp.gfz.de/en/data
NOAA SWPC, Tips on viewing the aurorahttps://www.spaceweather.gov/content/tips-viewing-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.