Best time to see the southern lights in Gold Harbour, South Georgia
Updated • 10:22 UTC
Gold Harbour gets under one clear aurora night a year — 0 in a typical year. Only an extreme storm brings the aurora within reach: nights were counted at Kp 9 or higher, which the planetary index last reached on 11 May 2024.
Typical-year figures: a 1996–2026 planetary Kp record crossed with a 2001–2020 cloud normal. They describe a normal year, not tonight — the live Gold Harbour forecast shows the actual cloud, moon and darkness right now. Check tonight's forecast for Gold Harbour →
🌌 Clear nights a year
0
Challenging — under one clear aurora night a year: 0 in a typical year Compare with South Georgia
🌟 Best Month
None
Kp 9 was reached on 11 May 2024, but the cloud normal leaves no clear night in any month
🌙 Peak Hours
23:00-01:00
Magnetic midnight
⚡ Required Kp
Kp 9.0+
Served for the live forecast; nights counted at Kp 9, last reached 11 May 2024
🧭 Auroral oval (model)
22.9° above the southern horizon
Model estimate at Kp 9
Month by month in Gold Harbour
Astronomical darkness, the nights on which planetary Kp reached Kp 9 inside that darkness, the local cloud normal, and what the cloud leaves of the count.
| Month | Astronomical darkness | Opportunity nights | Mean cloud | Clear opportunity nights | Moon-free |
|---|---|---|---|---|---|
| January | 0.72h on 3.7% of nights | 0 | 86.4% | — | |
| February | 3.91h | 0 | 84.1% | 58.5% | |
| March | 7.35h | 0 | 84.2% | 56.1% | |
| April | 9.74h | 0 | 83.9% | 54.8% | |
| May | 11.41h | 0.03 | 85.8% | 56.1% | |
| June | 12.19h | 0 | 87.4% | 55.4% | |
| July | 11.76h | 0 | 89% | 55.1% | |
| August | 10.34h | 0 | 88.1% | 55.6% | |
| September | 8.2h | 0 | 87.1% | 56.5% | |
| October | 5.21h | 0 | 88.7% | 55.2% | |
| November | 2.07h on 31.5% of nights | 0 | 86.8% | 59.2% | |
| December | No astronomical darkness | — | 85.9% | — | — |
December never reaches astronomical darkness at Gold Harbour, so no Kp value makes it a viewing month and it is excluded rather than scored.
Similar timing: Christchurch , Győr , Miskolc
Higher-odds destinations: Fairbanks , Yellowknife , Tromsø
How these numbers were made
- Evaluated at
- Gold Harbour, 54.62° S 35.94° W — darkness and cloud are properties of that point, not of a region.
- Darkness
- Sun at or below 18° under the horizon (astronomical twilight), sampled every 10 minutes across every year of the Kp record and averaged per night of each month rather than on one representative day.
- Geomagnetic record
- GFZ Potsdam planetary Kp index, 3-hourly, 1996–2026 — 89,662 intervals, licensed CC BY 4.0.
- Cloud
- NASA POWER 20-year monthly climatology (2001–2020), parameter CLOUD_AMT. A monthly mean, not a forecast.
- Moon
- A night counts as moon-free below 35% lunar illumination while the moon is up.
- Auroral oval
- NOAA auroral-oval model, equatorward boundary near magnetic latitude 67 − 2 × Kp. A model estimate shown beside the measured record; it never replaces it.
- Clear opportunity nights
- Nights on which at least one 3-hour Kp interval falls inside local astronomical darkness and reaches the count threshold, scaled by one minus the monthly mean cloud amount.
- Kp threshold
- Nights were counted at Kp 9 or higher, the same threshold the live forecast serves.
- Dataset version
- Version 2026-09-07, computed offline from the closed record — the page is regenerated, not forecast.
Kp record: GFZ Potsdam (CC BY 4.0). Cloud normal: NASA POWER. How the live forecast is built: methodology page.
Frequently Asked Questions
When can you see the southern lights in Gold Harbour?
There is no season for it. Gold Harbour averages 0 clear aurora nights a year across the 1996–2026 Kp record, so the answer is whenever an extreme storm happens to fall on a dark, clear night. Watch the live forecast rather than the calendar.
What Kp is needed to see the aurora from Gold Harbour?
Gold Harbour needs Kp 9, the top of the scale, for any display low on the southern horizon. The NOAA auroral-oval model puts the edge of the oval about 22.9° above the southern horizon at Gold Harbour at Kp 9. That is a model estimate, separate from the measured Kp record.
Has the aurora ever been visible from Gold Harbour?
Yes. In the 1996–2026 planetary Kp record the index reached Kp 9, the threshold these nights were counted at for Gold Harbour, most recently on 11 May 2024. Whether anyone saw it also depended on the cloud, moonlight and darkness of that night, which the Kp record does not carry.
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