Live aurora forecast

Northern lights in Invercargill tonight

Southland, South Island, New Zealand · 58° magnetic latitude · Kp 2–3 threshold

Aurora visibility · Invercargill
1/9
Unlikely tonight

Kp 1 is well below the Kp 2–3 threshold needed for aurora to be visible from Invercargill.

QuietStormExtreme
Threshold
Kp 2–3
Magnetic latitude
~58°S
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 20 Jul, 12:59 UTC

7-day outlook for Invercargill

Today
20 Jul
1
Quiet
Tomorrow
21 Jul
3
Possible
Wed
22 Jul
3
Possible
Thu
23 Jul
3
Possible
Fri
24 Jul
3
Possible
Sat
25 Jul
3
Possible
Sun
26 Jul
3
Possible

Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.

auroratonight.space

What Kp is needed here?

Invercargill sits at a magnetic latitude of approximately 58°S. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 2–3 before the auroral oval expands far enough north to be visible from here.

At Kp 2–3, visibility is possible from Invercargill but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Plan your viewing

Best dark sky sites near Invercargill

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark southern horizon within reach.

Oreti Beach

Get directions ↗
Bortle Class 2-3 - Excellent dark sky 10 km west of Invercargill - approximately 12 minute drive

A 30 km stretch of beach on the Invercargill Estuary facing west-southwest toward Foveaux Strait and the Southern Ocean. At night the beach is dark and exposed, with the Invercargill light dome to the east and open ocean to the west and south. Bortle Class 2-3 conditions on the beach itself. At 58°S magnetic latitude, Kp 2-3 is sufficient for aurora australis to appear above the southern and southwestern horizon. The beach faces directly toward the auroral oval during moderate geomagnetic activity. The long sand makes vehicle access possible to reach positions away from the township end, though soft sand off the access track is a risk. The beach is open all hours and well-known to local aurora photographers.

Bluff / Stirling Point

Get directions ↗
Bortle Class 2-3 - Excellent dark sky 27 km south of Invercargill - approximately 25 minute drive

Bluff is New Zealand's southernmost permanent town and the ferry terminal for Stewart Island. Stirling Point at the south end gives the most southerly road-accessible position on the South Island mainland. The foreshore south of Bluff faces directly south over Foveaux Strait toward Stewart Island and beyond. Light pollution from Bluff township is minimal - the town is small and the south-facing shore is away from the main settlement. At Kp 2-3, aurora australis appears on the southern horizon from Stirling Point, reflecting in the strait. The distance advantage over Invercargill is modest (27 km), but the proximity to Foveaux Strait gives a true ocean southern horizon with no land obstructions.

Toetoes Bay / Waikawa Point

Get directions ↗
Bortle Class 2 - Excellent dark sky 35 km southeast of Invercargill - approximately 30 minute drive

An exposed bay on the southeastern tip of Southland, south of the Catlins highway. The bay faces south-southeast over open Foveaux Strait. Bortle Class 2 conditions - no towns within 20 km to the south or east. The bay is reached via Waikawa Road from Fortrose. At night the area is completely dark and the southern horizon is unobstructed ocean. At Kp 2-3, aurora australis appears to the south and south-southeast from the shoreline. The combination of southern latitude (46.6°S geographic) and open ocean horizon makes this one of the more productive aurora positions in accessible Southland. The road is unsealed in sections - check conditions before driving at night.

When to go

Best time to see the aurora australis in Invercargill

Invercargill's aurora australis season runs from April through August, centred on the southern winter when nights are longest and darkest. The equinox months of March and September bring a boost in geomagnetic activity. Summer months bring too much twilight for aurora to show at this latitude.

Activity peaks around the March and September equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. These windows produce the strongest aurora australis events of the year for observers at this latitude.

October through February brings persistent twilight that washes out the aurora australis. Strong events during these months remain invisible because the sky never gets dark enough.

Up to 8 locations

Invercargill

New Zealand

Unlikely
Kp 1 need Kp 2-3
Checking darkness…
Gore

New Zealand

Unlikely
Kp 1 need Kp 3
Checking darkness…
Stewart Island

New Zealand

Unlikely
Kp 1 need Kp 3-4
Checking darkness…
The odds

How often does the aurora appear in Invercargill?

Average nights per month the Kp reached Invercargill's threshold of 3+, from 15 years of geomagnetic data (2010–2024).

10.2Jan
11.2Feb
13.6Mar
12.4Apr
10.7May
9Jun
10.1Jul
12.3Aug
13.2Sep
12.8Oct
10.3Nov
9.3Dec

Counts the Kp 3+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0

Make it happen

Plan your trip to Invercargill

Based on 15 years of geomagnetic data (2010–2024)

1st
March
13.6
avg aurora nights
Stay 3+ nights for 80% chance
2nd
September
13.2
avg aurora nights
Stay 3+ nights for 80% chance
3rd
October
12.8
avg aurora nights
Stay 4+ nights for 80% chance

Best window

The August to October window averages 38 aurora nights - the strongest consecutive stretch of the year.

How long to stay

For your best chance in March, plan at least 3 nights.

Aurora activity peaks at the March and September equinoxes in both hemispheres. This is driven by the angle of Earth's magnetic field relative to the solar wind, not by local seasons. Winter months at this latitude offer longer dark nights for observing, but March and September average the highest number of aurora nights in the historical data.

Questions

Common questions about aurora in Invercargill

Can you see aurora australis from Invercargill?
Yes. Invercargill is New Zealand's southernmost city, sitting at 58°S magnetic latitude - a lower threshold than Queenstown, Dunedin, or Christchurch. Kp 2-3 is sufficient for aurora australis from south-facing dark sites. Oreti Beach (10 km west) and Bluff (27 km south) give the best positions. The southerly latitude means aurora is visible here on moderate geomagnetic nights that produce nothing visible further north. During G2+ storms, aurora australis from Invercargill extends well overhead.
What Kp is needed for aurora at Invercargill?
Kp 2-3 from Oreti Beach and Bluff. At 58°S magnetic latitude, Invercargill is within the outer edge of the auroral oval during moderate geomagnetic activity. Kp 2-3 events occur frequently during solar maximum - several times per month. This makes Invercargill one of New Zealand's more productive aurora locations on a frequency basis. Compare with Queenstown (Kp 4-5) or Christchurch (Kp 5) - Invercargill qualifies on nights that produce nothing from those cities.
How does Invercargill compare to Stewart Island for aurora?
Stewart Island at 59°S magnetic latitude has a slightly lower threshold (Kp 3, though some sources cite Kp 2-3). The practical difference between Invercargill and Stewart Island is ferry access and accommodation. Invercargill has a full city infrastructure. Stewart Island requires a 1-hour ferry from Bluff and has very limited accommodation. For most visitors, Invercargill is the better base - use Oreti Beach or Bluff for the south-facing horizon, and reserve Stewart Island for a dedicated multi-night trip during an active geomagnetic period.
Where is the best dark sky site near Invercargill?
Oreti Beach (10 km west) is the most accessible option - a long, dark beach facing southwest toward Foveaux Strait. Bluff and Stirling Point (27 km south) give the furthest-south road-accessible position on the mainland. Toetoes Bay near Waikawa Point (35 km southeast) gives Bortle Class 2 conditions facing south-southeast over open ocean - slightly further but darker and more exposed than the other options. All three face south over water at Kp 2-3 thresholds.
When is the best time for aurora at Invercargill?
May to August for the longest dark nights. Invercargill at 46.4°S geographic gets around 15 hours of darkness in mid-winter. Southland weather is variable year-round, with cloud cover and wind from the Southern Ocean. Clear nights do occur in all seasons. The September equinox is statistically the most active geomagnetic period. The advantage of Invercargill's low threshold is that aurora is possible on nights of only moderate geomagnetic activity - waiting for Kp 5 as required in Christchurch is not necessary here.
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