Ocean Grove · August 2027
Southern lights in Ocean Grove in August 2027
Answer
August against the rest of the year
August cloud at Ocean Grove averages 62% in NASA POWER's 2001 to 2020 record, 4 points cloudier than its yearly mean. January is Ocean Grove's clearest month at 51%. By civil night times clear sky, August scores 4.7 hours at Ocean Grove, 6th of 12. Anadyr, 11,808 km away, averages 70%, cloudier by 8 points.
Civil night at Ocean Grove starts August at 12 h 48 min and reaches 11 h 48 min by August 31, 1.0 hours shorter. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 10.3 hours on the 15th.
August night by night
August opens toward a new moon on Aug 2, with full moon on Aug 17, in Australia/Melbourne dates. Ocean Grove gets 193 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: Aug 1 (4 h), Aug 2 (4 h), Aug 3 (4 h).
- 1
1% lit
12.8 h
- 2
0% lit
12.8 h
- 3
2% lit
12.2 h
- 4
7% lit
10.9 h
- 5
14% lit
9.7 h
- 6
23% lit
8.5 h
- 7
33% lit
7.3 h
- 8
44% lit
6.2 h
- 9
54% lit
5.1 h
- 10
64% lit
4.0 h
- 11
73% lit
3.0 h
- 12
81% lit
2.1 h
- 13
88% lit
1.4 h
- 14
93% lit
0.8 h
- 15
97% lit
0.2 h
- 16
100% lit
0.0 h
- 17
100% lit
0.0 h
- 18
98% lit
0.5 h
- 19
95% lit
1.4 h
- 20
90% lit
2.4 h
- 21
84% lit
3.4 h
- 22
75% lit
4.5 h
- 23
66% lit
5.5 h
- 24
56% lit
6.7 h
- 25
45% lit
7.8 h
- 26
34% lit
8.8 h
- 27
23% lit
9.8 h
- 28
14% lit
10.6 h
- 29
7% lit
11.2 h
- 30
2% lit
11.8 h
- 31
0% lit
11.8 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 Augusts
No whole Kp puts the average oval edge over Ocean Grove by SWPC's rule, so the GFZ record has no threshold to count for August. Ocean Grove sits at 45.3 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.
August across Australia
Coming from July (13.2 hours at Ocean Grove), August loses darkness, and September brings shorter nights (11.2 hours on the 15th).
Darkness and moon, every night
| Night | Civil | Astronomical | Moon-free dark | Moon-free, 10 PM to 2 AM | Moon lit |
|---|---|---|---|---|---|
| Sun Aug 1 | 12 h 48 min | 10 h 42 min | 12 h 48 min | 4 h | 1% |
| Mon Aug 2 | 12 h 46 min | 10 h 41 min | 12 h 46 min | 4 h | 0% |
| Tue Aug 3 | 12 h 45 min | 10 h 39 min | 12 h 14 min | 4 h | 2% |
| Wed Aug 4 | 12 h 43 min | 10 h 38 min | 10 h 57 min | 4 h | 7% |
| Thu Aug 5 | 12 h 41 min | 10 h 36 min | 9 h 42 min | 4 h | 14% |
| Fri Aug 6 | 12 h 39 min | 10 h 34 min | 8 h 30 min | 3 h 43 min | 23% |
| Sat Aug 7 | 12 h 37 min | 10 h 33 min | 7 h 20 min | 2 h 34 min | 33% |
| Sun Aug 8 | 12 h 36 min | 10 h 31 min | 6 h 11 min | 1 h 26 min | 44% |
| Mon Aug 9 | 12 h 34 min | 10 h 29 min | 5 h 4 min | 20 min | 54% |
| Tue Aug 10 | 12 h 32 min | 10 h 28 min | 4 h | 0 min | 64% |
| Wed Aug 11 | 12 h 30 min | 10 h 26 min | 3 h 1 min | 0 min | 73% |
| Thu Aug 12 | 12 h 28 min | 10 h 24 min | 2 h 9 min | 0 min | 81% |
| Fri Aug 13 | 12 h 26 min | 10 h 22 min | 1 h 24 min | 0 min | 88% |
| Sat Aug 14 | 12 h 24 min | 10 h 20 min | 46 min | 0 min | 93% |
| Sun Aug 15 | 12 h 22 min | 10 h 18 min | 13 min | 0 min | 97% |
| Mon Aug 16 | 12 h 20 min | 10 h 17 min | 0 min | 0 min | 100% |
| Tue Aug 17 | 12 h 18 min | 10 h 15 min | 0 min | 0 min | 100% |
| Wed Aug 18 | 12 h 16 min | 10 h 13 min | 29 min | 0 min | 98% |
| Thu Aug 19 | 12 h 14 min | 10 h 11 min | 1 h 27 min | 0 min | 95% |
| Fri Aug 20 | 12 h 12 min | 10 h 9 min | 2 h 26 min | 0 min | 90% |
| Sat Aug 21 | 12 h 10 min | 10 h 7 min | 3 h 26 min | 0 min | 84% |
| Sun Aug 22 | 12 h 8 min | 10 h 5 min | 4 h 28 min | 49 min | 75% |
| Mon Aug 23 | 12 h 5 min | 10 h 3 min | 5 h 33 min | 1 h 55 min | 66% |
| Tue Aug 24 | 12 h 3 min | 10 h 1 min | 6 h 41 min | 3 h 3 min | 56% |
| Wed Aug 25 | 12 h 1 min | 9 h 58 min | 7 h 47 min | 4 h | 45% |
| Thu Aug 26 | 11 h 59 min | 9 h 56 min | 8 h 51 min | 4 h | 34% |
| Fri Aug 27 | 11 h 57 min | 9 h 54 min | 9 h 47 min | 4 h | 23% |
| Sat Aug 28 | 11 h 54 min | 9 h 52 min | 10 h 35 min | 4 h | 14% |
| Sun Aug 29 | 11 h 52 min | 9 h 50 min | 11 h 14 min | 4 h | 7% |
| Mon Aug 30 | 11 h 50 min | 9 h 48 min | 11 h 48 min | 4 h | 2% |
| Tue Aug 31 | 11 h 48 min | 9 h 45 min | 11 h 48 min | 4 h | 0% |
Questions
- Can you see the southern lights in Ocean Grove in August?
- On dark, clear nights with enough activity. 31 of 31 nights at Ocean Grove have civil darkness.
- How dark is Ocean Grove in August?
- Ocean Grove averages 12.3 hours of civil night a night in August 2027, from 12 h 48 min on the 1st to 11 h 48 min on the last night.
- How cloudy is Ocean Grove in August?
- NASA POWER's 2001 to 2020 climatology gives Ocean Grove's 1 degree cell 62% mean cloud in August, against 58% for the whole year. It is an all-hours average, not a forecast.
- What is the best night in August 2027 for aurora in Ocean Grove?
- By darkness and moon alone, Aug 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Ocean Grove. Activity on that date will only be known hours ahead.
- Is August or September better in Ocean Grove?
- By civil night times the clear share, August scores 4.7 hours at Ocean Grove and September 4.5. August 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.