Ushuaia · February 2027
Southern lights in Ushuaia in February 2027
Answer
February against the rest of the year
February cloud at Ushuaia averages 81% in NASA POWER's 2001 to 2020 record, 3 points cloudier than its yearly mean. July is Ushuaia's clearest month at 72%. By civil night times clear sky, February scores 1.5 hours at Ushuaia, 9th of 12. Buffalo, 10,909 km away, averages 82%, cloudier by 1 points.
Civil night at Ushuaia starts February at 6 h 45 min and reaches 8 h 57 min by February 28 as the nights lengthen by 2.2 hours. The 10 PM to 2 AM window is fully dark on 18 of 28 nights. True astronomical darkness, the sun 18 degrees down, lasts 3.9 hours on the 15th.
February night by night
February opens toward a new moon on Feb 6, with full moon on Feb 20, in America/Argentina/Ushuaia dates. Ushuaia gets 110 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: Feb 10 (3 h 56 min), Feb 11 (3 h 56 min), Feb 9 (3 h 54 min).
- 1
18% lit
2.8 h
- 2
11% lit
3.8 h
- 3
6% lit
5.0 h
- 4
2% lit
6.3 h
- 5
0% lit
7.1 h
- 6
0% lit
7.2 h
- 7
2% lit
7.2 h
- 8
6% lit
7.3 h
- 9
11% lit
7.4 h
- 10
18% lit
7.5 h
- 11
27% lit
7.5 h
- 12
37% lit
7.3 h
- 13
48% lit
7.1 h
- 14
59% lit
6.7 h
- 15
70% lit
5.9 h
- 16
80% lit
4.8 h
- 17
89% lit
3.3 h
- 18
95% lit
1.7 h
- 19
99% lit
0.1 h
- 20
100% lit
0.0 h
- 21
98% lit
0.0 h
- 22
94% lit
0.0 h
- 23
87% lit
0.0 h
- 24
79% lit
0.0 h
- 25
70% lit
0.2 h
- 26
61% lit
0.6 h
- 27
51% lit
1.1 h
- 28
41% lit
1.8 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 Februarys
No whole Kp puts the average oval edge over Ushuaia by SWPC's rule, so the GFZ record has no threshold to count for February. 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.
February across Argentina
Coming from January (5.5 hours at Ushuaia), February adds darkness, and the nights keep growing into March (10.2 hours on the 15th).
Darkness and moon, every night
| Night | Civil | Astronomical | Moon-free dark | Moon-free, 10 PM to 2 AM | Moon lit |
|---|---|---|---|---|---|
| Mon Feb 1 | 6 h 45 min | 0 min | 2 h 47 min | 2 h 47 min | 18% |
| Tue Feb 2 | 6 h 49 min | 37 min | 3 h 48 min | 3 h 37 min | 11% |
| Wed Feb 3 | 6 h 54 min | 1 h 12 min | 5 h 1 min | 3 h 40 min | 6% |
| Thu Feb 4 | 6 h 59 min | 1 h 34 min | 6 h 19 min | 3 h 42 min | 2% |
| Fri Feb 5 | 7 h 4 min | 1 h 53 min | 7 h 4 min | 3 h 44 min | 0% |
| Sat Feb 6 | 7 h 9 min | 2 h 9 min | 7 h 9 min | 3 h 47 min | 0% |
| Sun Feb 7 | 7 h 14 min | 2 h 23 min | 7 h 14 min | 3 h 49 min | 2% |
| Mon Feb 8 | 7 h 19 min | 2 h 36 min | 7 h 19 min | 3 h 51 min | 6% |
| Tue Feb 9 | 7 h 24 min | 2 h 49 min | 7 h 24 min | 3 h 54 min | 11% |
| Wed Feb 10 | 7 h 28 min | 3 h | 7 h 28 min | 3 h 56 min | 18% |
| Thu Feb 11 | 7 h 33 min | 3 h 11 min | 7 h 31 min | 3 h 56 min | 27% |
| Fri Feb 12 | 7 h 38 min | 3 h 22 min | 7 h 21 min | 3 h 44 min | 37% |
| Sat Feb 13 | 7 h 43 min | 3 h 32 min | 7 h 6 min | 3 h 26 min | 48% |
| Sun Feb 14 | 7 h 48 min | 3 h 42 min | 6 h 40 min | 2 h 58 min | 59% |
| Mon Feb 15 | 7 h 53 min | 3 h 51 min | 5 h 56 min | 2 h 11 min | 70% |
| Tue Feb 16 | 7 h 58 min | 4 h | 4 h 47 min | 1 h | 80% |
| Wed Feb 17 | 8 h 3 min | 4 h 9 min | 3 h 18 min | 0 min | 89% |
| Thu Feb 18 | 8 h 8 min | 4 h 18 min | 1 h 41 min | 0 min | 95% |
| Fri Feb 19 | 8 h 13 min | 4 h 26 min | 3 min | 0 min | 99% |
| Sat Feb 20 | 8 h 18 min | 4 h 34 min | 0 min | 0 min | 100% |
| Sun Feb 21 | 8 h 23 min | 4 h 42 min | 0 min | 0 min | 98% |
| Mon Feb 22 | 8 h 28 min | 4 h 50 min | 0 min | 0 min | 94% |
| Tue Feb 23 | 8 h 32 min | 4 h 58 min | 0 min | 0 min | 87% |
| Wed Feb 24 | 8 h 37 min | 5 h 5 min | 0 min | 0 min | 79% |
| Thu Feb 25 | 8 h 42 min | 5 h 12 min | 13 min | 0 min | 70% |
| Fri Feb 26 | 8 h 47 min | 5 h 20 min | 35 min | 0 min | 61% |
| Sat Feb 27 | 8 h 52 min | 5 h 27 min | 1 h 6 min | 26 min | 51% |
| Sun Feb 28 | 8 h 57 min | 5 h 34 min | 1 h 48 min | 1 h 6 min | 41% |
Questions
- Can you see the southern lights in Ushuaia in February?
- On dark, clear nights with enough activity. 28 of 28 nights at Ushuaia have civil darkness.
- How dark is Ushuaia in February?
- Ushuaia averages 7.8 hours of civil night a night in February 2027, from 6 h 45 min on the 1st to 8 h 57 min on the last night.
- How cloudy is Ushuaia in February?
- NASA POWER's 2001 to 2020 climatology gives Ushuaia's 1 degree cell 81% mean cloud in February, against 78% for the whole year. It is an all-hours average, not a forecast.
- What is the best night in February 2027 for aurora in Ushuaia?
- By darkness and moon alone, Feb 10, with 3 h 56 min of moon-free darkness inside 10 PM to 2 AM at Ushuaia. Activity on that date will only be known hours ahead.
- Is February or March better in Ushuaia?
- By civil night times the clear share, February scores 1.5 hours at Ushuaia and March 2.0. March 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.