New Zealand · Aurora australis
Is the aurora visible in Bluff tonight?
Right now
Wait for dark.
Kp is 2.3. Bluff needs Kp 7+ for the oval overhead — right now it’s low on the southern horizon.
Tonight's peak is forecast around Kp 5.0 (Minor storm). The forecast still depends on darkness, cloud and the moon at your exact spot.
Reliable about 30 minutes ahead — cloud decides the rest.
Bluff only catches the aurora during strong geomagnetic storms — it needs roughly Kp 7+ for the southern lights to come into view. Here's tonight's live space weather and how to plan around it.
Come back at 07:51 PM — that’s when the sky goes dark and the aurora could show.
Add a reminderHow to see the aurora from Bluff
Face south and find a clear, low horizon in that direction. Everything else — dark skies, adapted eyes, the camera trick — is the same anywhere on Earth, so it lives in the how to photograph the aurora guide.
When can you see the southern lights in Bluff?
Aurora season in Bluff runs roughly March – September. Here the months that pay off are September, March, and May — the table below shows why. See the full best time to see the aurora guide for the season in detail.
Bluff by the numbers
Between Sep 1, 2025 and Aug 31, 2026, Bluff had 365 nights dark enough for the aurora, and the planetary Kp reached the Kp 7+ this place needs on 9 of them. Averaged over 2015–2024 and this location's cloud cover, that works out to about 1 aurora-possible nights a year, most of them in September, March, and May.
| Month | Dark hours per night | Dark nights | Average cloud cover | Aurora-possible nights |
|---|---|---|---|---|
| January | 7.3 h | 31 | 72% | 0 |
| February | 8.8 h | 28 | 68% | 0 |
| March | 10.5 h | 31 | 71% | <1 |
| April | 12.3 h | 30 | 73% | <1 |
| May | 13.5 h | 31 | 71% | <1 |
| June | 14.3 h | 30 | 70% | <1 |
| July | 14 h | 31 | 72% | 0 |
| August | 12.8 h | 31 | 69% | <1 |
| September | 11 h | 30 | 69% | <1 |
| October | 9.3 h | 31 | 71% | <1 |
| November | 7.8 h | 30 | 69% | <1 |
| December | 6.8 h | 31 | 73% | 0 |
Sources: the sun's geometry (dark = at least 6° below the horizon), GFZ Potsdam's Kp index 2015–2024 (CC BY 4.0), ERA5 cloud cover via Open-Meteo (the table shows the monthly mean; the estimate counts days that were not overcast). An estimate for comparing places and months, not a forecast — how we estimate this.
Where it’s reliable
Chase it where the oval lives
In depth
Read the Stewart Island destination guide
Best months, where exactly to go, and the tours worth booking — the full guide to seeing the aurora in Stewart Island.