Live aurora forecast

Northern lights in Oamaru tonight

Waitaki, South Island, New Zealand · 55° magnetic latitude · Kp 3–4 threshold

Aurora visibility · Oamaru
1/9
Unlikely tonight

Kp 1 is well below the Kp 3–4 threshold needed for aurora to be visible from Oamaru.

QuietStormExtreme
Threshold
Kp 3–4
Magnetic latitude
~55°S
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 20 Jul, 12:58 UTC

7-day outlook for Oamaru

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?

Oamaru sits at a magnetic latitude of approximately 55°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 3–4 before the auroral oval expands far enough north to be visible from here.

At Kp 3–4, visibility is possible from Oamaru 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 Oamaru

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

Elephant Rocks, Waitaki Valley

Get directions ↗
Bortle Class 2 - Excellent dark sky 35 km northwest of Oamaru - approximately 35 minute drive

A limestone outcrop in the Waitaki Valley farmland, surrounded by flat tussock and pastoral land. The pale boulders provide a distinctive foreground option for aurora photography. The surrounding farmland is open in all directions with no significant light sources, giving an unobstructed southern horizon and Bortle Class 2 conditions. The Aoraki Mackenzie International Dark Sky Reserve begins approximately 30 km further northwest, so the sky darkens progressively in that direction. At Kp 3-4, aurora australis appears as a pale arc above the southern horizon from this position. Park on the roadside and walk to the rock field for the best unobstructed view south.

Cape Wanbrow, Oamaru foreshore

Get directions ↗
Bortle Class 3-4 - Rural sky Within Oamaru - approximately 10 minute drive from town centre

A low headland at the southern end of Oamaru, above the Oamaru Harbour and the blue penguin colony. A viewing platform faces southeast across Friendly Bay and the Pacific Ocean. Oamaru's town glow is to the north and northwest, leaving the eastern and southeastern horizon relatively unaffected. From the cape track south of the colony, aurora australis appears to the south-southeast over open ocean. Practical for short-notice aurora observations without leaving town. Not as dark as the Waitaki Valley, but usable for Kp 4+ events.

Kurow, upper Waitaki Valley

Get directions ↗
Bortle Class 2 - Excellent dark sky 65 km northwest of Oamaru - approximately 55 minute drive

A small Waitaki River township at the foot of the Hakataramea Pass. The surrounding upper valley is in the rain shadow of the Southern Alps and has lower cloud frequency than the Oamaru coast. Bortle Class 2 conditions from the valley floor. The hydro lakes further northwest - Benmore, Aviemore, Waitaki - give south-facing open lake-surface positions with excellent southern horizon access. Lake Benmore at 85 km northwest sits at the southern margin of the Aoraki Mackenzie Dark Sky Reserve. Drive west from Kurow along the north bank of the Waitaki River for progressively darker sky with wider southern views.

When to go

Best time to see the aurora australis in Oamaru

Oamaru'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

Oamaru

New Zealand

Unlikely
Kp 1 need Kp 3-4
Checking darkness…
Timaru

New Zealand

Unlikely
Kp 1 need Kp 4
Checking darkness…
Dunedin

New Zealand

Unlikely
Kp 1 need Kp 4-5
Checking darkness…
The odds

How often does the aurora appear in Oamaru?

Average nights per month the Kp reached Oamaru'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 Oamaru

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.

From the community

Aurora photographs from Oamaru

Real photos sourced from Wikimedia Commons.

Aurora over OamaruAurora over Oamaru
Aurora over OamaruAurora over Oamaru
Aurora over OamaruAurora over Oamaru
Aurora over OamaruAurora over Oamaru
Aurora over OamaruAurora over Oamaru
Aurora over OamaruAurora over Oamaru
Questions

Common questions about aurora in Oamaru

Can you see aurora australis from Oamaru?
Yes. Oamaru sits at 55°S magnetic latitude on the South Canterbury coast and needs Kp 3-4 for aurora australis from south-facing positions. The Waitaki Valley northwest of town gives Bortle Class 2 dark sky with an open southern horizon at Elephant Rocks (35 km) and Kurow (65 km). Cape Wanbrow on the Oamaru foreshore gives a south-facing ocean position within town for Kp 4+ events. The area is also a gateway to the Aoraki Mackenzie International Dark Sky Reserve.
What Kp is needed for aurora at Oamaru?
Kp 3-4 from the Waitaki Valley at Elephant Rocks and Kurow. From Cape Wanbrow within town, Kp 4 is a practical minimum due to moderate light pollution. At 55°S magnetic latitude, Oamaru sits between Lake Tekapo (Kp 3, darker sky) and Christchurch (Kp 5, more light pollution) in threshold terms. The Waitaki Valley gives enough sky darkness that faint aurora glow is detectable at Kp 3 on clear nights from positions away from any settlement.
Is Oamaru close to the Aoraki Mackenzie Dark Sky Reserve?
The Aoraki Mackenzie International Dark Sky Reserve begins at the upper Mackenzie Basin, approximately 80-90 km northwest of Oamaru via the Waitaki Valley. The reserve covers 4,300 km² including Lake Tekapo and Lake Pukaki. The Waitaki Valley is the natural southeastern approach corridor. Kurow (65 km northwest) sits near the edge of the reserve influence, and Lake Benmore (85 km northwest) is at the southern margin. Conditions improve progressively as you drive northwest from Oamaru into the valley.
When is the best time for aurora at Oamaru?
May to August for the longest dark nights. Oamaru at 45°S geographic latitude gets around 14 hours of darkness in mid-winter. The Waitaki Valley is in the rain shadow of the Southern Alps and typically has lower cloud frequency than the coast, making valley positions more reliable than Cape Wanbrow during periods of variable weather. The September equinox is statistically the most active geomagnetic period. Check the Bureau of Meteorology New Zealand forecast and compare coast versus valley cloud cover before driving out.
How does Oamaru compare to Lake Tekapo for aurora watching?
Lake Tekapo has better dark sky conditions (Bortle Class 1-2) and is inside the Aoraki Mackenzie International Dark Sky Reserve, giving a lower effective Kp threshold at the same magnetic latitude. Oamaru is easier to access from Christchurch or Dunedin and has coast-facing positions at Cape Wanbrow. For a dedicated dark sky aurora trip from Oamaru, the upper Waitaki Valley is the natural destination - it approaches Lake Tekapo-quality sky within 85 km. For aurora photography, Elephant Rocks gives an unusual foreground not available at Lake Tekapo.
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