Ushuaia · June 2027
Southern lights in Ushuaia in June 2027
Answer
June against the rest of the year
June cloud at Ushuaia averages 73% in NASA POWER's 2001 to 2020 record, 5 points clearer than its yearly mean. July is Ushuaia's clearest month at 72%. By civil night times clear sky, June scores 4.1 hours at Ushuaia, 2nd of 12. Buffalo, 10,909 km away, averages 61%, clearer by 12 points.
Civil night at Ushuaia starts June at 14 h 52 min and reaches 15 h 5 min by June 30 as the nights lengthen by 0.2 hours. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 12.1 hours on the 15th.
June night by night
June opens toward a new moon on Jun 4, with full moon on Jun 18, in America/Argentina/Ushuaia dates. Ushuaia gets 224 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: Jun 1 (4 h), Jun 2 (4 h), Jun 3 (4 h).
- 1
10% lit
13.2 h
- 2
4% lit
14.8 h
- 3
1% lit
14.9 h
- 4
0% lit
14.9 h
- 5
3% lit
15.0 h
- 6
8% lit
14.2 h
- 7
15% lit
12.6 h
- 8
25% lit
11.0 h
- 9
35% lit
9.5 h
- 10
46% lit
8.1 h
- 11
57% lit
6.6 h
- 12
68% lit
5.3 h
- 13
77% lit
3.9 h
- 14
85% lit
2.5 h
- 15
92% lit
1.2 h
- 16
96% lit
0.0 h
- 17
99% lit
0.0 h
- 18
100% lit
0.0 h
- 19
99% lit
0.0 h
- 20
96% lit
0.6 h
- 21
92% lit
1.8 h
- 22
86% lit
3.1 h
- 23
78% lit
4.3 h
- 24
70% lit
5.5 h
- 25
61% lit
6.8 h
- 26
51% lit
8.0 h
- 27
41% lit
9.3 h
- 28
31% lit
10.8 h
- 29
21% lit
12.2 h
- 30
13% lit
13.7 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 Junes
No whole Kp puts the average oval edge over Ushuaia by SWPC's rule, so the GFZ record has no threshold to count for June. 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.
June across Argentina
Coming from May (14.2 hours at Ushuaia), June adds darkness, and July brings shorter nights (14.7 hours on the 15th). The June solstice falls on June 21, 11:07 Ushuaia time.
Darkness and moon, every night
| Night | Civil | Astronomical | Moon-free dark | Moon-free, 10 PM to 2 AM | Moon lit |
|---|---|---|---|---|---|
| Tue Jun 1 | 14 h 52 min | 11 h 52 min | 13 h 12 min | 4 h | 10% |
| Wed Jun 2 | 14 h 53 min | 11 h 54 min | 14 h 45 min | 4 h | 4% |
| Thu Jun 3 | 14 h 55 min | 11 h 55 min | 14 h 55 min | 4 h | 1% |
| Fri Jun 4 | 14 h 57 min | 11 h 57 min | 14 h 57 min | 4 h | 0% |
| Sat Jun 5 | 14 h 58 min | 11 h 58 min | 14 h 58 min | 4 h | 3% |
| Sun Jun 6 | 15 h | 11 h 59 min | 14 h 14 min | 4 h | 8% |
| Mon Jun 7 | 15 h 1 min | 12 h | 12 h 38 min | 4 h | 15% |
| Tue Jun 8 | 15 h 2 min | 12 h 1 min | 11 h 2 min | 3 h 59 min | 25% |
| Wed Jun 9 | 15 h 3 min | 12 h 2 min | 9 h 30 min | 2 h 26 min | 35% |
| Thu Jun 10 | 15 h 4 min | 12 h 3 min | 8 h 3 min | 58 min | 46% |
| Fri Jun 11 | 15 h 5 min | 12 h 4 min | 6 h 38 min | 0 min | 57% |
| Sat Jun 12 | 15 h 6 min | 12 h 4 min | 5 h 15 min | 0 min | 68% |
| Sun Jun 13 | 15 h 7 min | 12 h 5 min | 3 h 53 min | 0 min | 77% |
| Mon Jun 14 | 15 h 7 min | 12 h 5 min | 2 h 31 min | 0 min | 85% |
| Tue Jun 15 | 15 h 8 min | 12 h 6 min | 1 h 11 min | 0 min | 92% |
| Wed Jun 16 | 15 h 8 min | 12 h 6 min | 0 min | 0 min | 96% |
| Thu Jun 17 | 15 h 9 min | 12 h 7 min | 0 min | 0 min | 99% |
| Fri Jun 18 | 15 h 9 min | 12 h 7 min | 0 min | 0 min | 100% |
| Sat Jun 19 | 15 h 9 min | 12 h 7 min | 0 min | 0 min | 99% |
| Sun Jun 20 | 15 h 9 min | 12 h 7 min | 33 min | 0 min | 96% |
| Mon Jun 21 | 15 h 9 min | 12 h 7 min | 1 h 48 min | 0 min | 92% |
| Tue Jun 22 | 15 h 9 min | 12 h 7 min | 3 h 4 min | 0 min | 86% |
| Wed Jun 23 | 15 h 9 min | 12 h 7 min | 4 h 18 min | 19 min | 78% |
| Thu Jun 24 | 15 h 9 min | 12 h 7 min | 5 h 32 min | 1 h 33 min | 70% |
| Fri Jun 25 | 15 h 8 min | 12 h 6 min | 6 h 46 min | 2 h 47 min | 61% |
| Sat Jun 26 | 15 h 8 min | 12 h 6 min | 8 h 1 min | 4 h | 51% |
| Sun Jun 27 | 15 h 7 min | 12 h 5 min | 9 h 21 min | 4 h | 41% |
| Mon Jun 28 | 15 h 7 min | 12 h 5 min | 10 h 45 min | 4 h | 31% |
| Tue Jun 29 | 15 h 6 min | 12 h 4 min | 12 h 14 min | 4 h | 21% |
| Wed Jun 30 | 15 h 5 min | 12 h 3 min | 13 h 43 min | 4 h | 13% |
Questions
- Can you see the southern lights in Ushuaia in June?
- On dark, clear nights with enough activity. 30 of 30 nights at Ushuaia have civil darkness.
- How dark is Ushuaia in June?
- Ushuaia averages 15.1 hours of civil night a night in June 2027, from 14 h 52 min on the 1st to 15 h 5 min on the last night.
- How cloudy is Ushuaia in June?
- NASA POWER's 2001 to 2020 climatology gives Ushuaia's 1 degree cell 73% mean cloud in June, against 78% for the whole year. It is an all-hours average, not a forecast.
- What is the best night in June 2027 for aurora in Ushuaia?
- By darkness and moon alone, Jun 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 June or July better in Ushuaia?
- By civil night times the clear share, June scores 4.1 hours at Ushuaia and July 4.1. July 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.