Aurora australis St Helens tonight
St Helens sits at 52°S magnetic latitude on Tasmania's northeast coast. Kp 4 is the threshold from Bay of Fires and Mount William National Park, where Bortle Class 2-3 beaches face the open Tasman Sea with aurora appearing to the south. The northeast coast is Tasmania's clearest region in winter. Peak season: May to August.
Aurora visibility - St Helens
Unlikely tonight
Kp 1 is well below the Kp 4 threshold needed for aurora to be visible from St Helens.
Current Kp
1
of 9
7-day outlook for St Helens
Today
28 May
Tomorrow
29 May
Sat
30 May
Sun
31 May
Mon
1 Jun
Tue
2 Jun
Wed
3 Jun
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
What Kp is needed here?
St Helens sits at a magnetic latitude of approximately 52°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 4 before the auroral oval expands far enough north to be visible from here.
At Kp 4, visibility is possible from St Helens but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.
Best dark sky sites near St Helens
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark southern horizon within reach.
Bay of Fires
Get directions ↗One of Tasmania's most distinctive coastlines - white beaches, turquoise water, and orange lichen-covered granite boulders. The Bay of Fires faces east over the Tasman Sea. Aurora australis appears in the south to southeast from beach positions. At night the bay has no artificial light visible. Bortle Class 2-3 conditions. The Eddystone Point lighthouse at the northern end gives the furthest south-facing position in the bay. Anson's Bay and Binalong Bay at the southern end are more accessible and still face south-southeast over open water. The beaches are dark and quiet at night - no towns within 20 km to the east or south.
Binalong Bay
Get directions ↗A small bay at the southern end of Bay of Fires, easily accessible from St Helens. The beach faces east and south-east with granite headlands. At night the bay is quiet and dark - minimal lighting from the small cluster of holiday houses. The southern horizon is open across George Bay and beyond. Position on the beach south of the houses for the best sky. At Kp 4, aurora australis is visible to the south-southeast from this position during a clear night. The lichen-covered boulders give distinctive foreground options for aurora photography.
Mount William National Park
Get directions ↗A remote national park at the northeastern tip of Tasmania. Eddystone Point within the park has a lighthouse on a granite headland facing north and east over open Tasman Sea. The southern headlands of the park give south-facing positions across open water. Bortle Class 2 conditions - no towns within 50 km to the east or north. The park road is partly unsealed and requires a standard vehicle in good condition. Forester kangaroos are common on the road at night - drive carefully. The combination of coastal position, open horizon, and Bortle Class 2 sky makes this the highest-quality dark sky site directly accessible from St Helens.
Best time to see the aurora australis in St Helens
St Helens'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.
Other Australia aurora forecasts
← Australia overviewCompare nearby locations
Up to 4 locations
How often does aurora appear in St Helens?
Average nights per month when Kp reaches 4+ - based on 15 years of data
Best month
March
Average aurora nights per year
51
Kp threshold
4+
Based on 15 years of geomagnetic data (2010-2024). Shows nights when Kp reached 4+ at any point in the day - cloud cover and local darkness not included. Months with no astronomical darkness show zero.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0
Plan your trip to St Helens
Based on 15 years of geomagnetic data
March
5.2
avg aurora nights
Stay 9+ nights for 80% chance
September
5.0
avg aurora nights
Stay 9+ nights for 80% chance
October
4.8
avg aurora nights
Stay 10+ nights for 80% chance
Best window
The August to October window averages 15 aurora nights - the strongest consecutive stretch of the year.
How long to stay
For your best chance in March, plan at least 9 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.
Related pages
Aurora Australis Australia
Australia aurora hub with current Kp status.
Aurora Australis Tasmania
Tasmania overview - Australia's premier aurora destination.
Aurora Australis Launceston
Launceston - Ben Lomond and Bay of Fires, Kp 5-6.
Aurora Australis Hobart
Hobart - South Arm and Cockle Creek, Kp 5-6.
Aurora Australis in Australia
Complete guide to aurora australis in Australia - where, when, and what Kp.
Aurora photographs from St Helens

Aurora australis over St Helens
Aurora australis over St Helens

Aurora australis over St Helens

Aurora australis over St Helens

Aurora australis over St Helens

Aurora australis over St Helens
Common questions
Aurora australis from St Helens - Bay of Fires, Binalong Bay, and Mount William NP.