Live aurora forecast

Northern lights in Wakkanai tonight

Northern Hokkaido, Japan · 39° magnetic latitude · Kp 7-8 threshold

Aurora visibility · Wakkanai
1/9
Unlikely tonight

Kp 1 is well below the Kp 7-8 threshold needed for aurora to be visible from Wakkanai.

QuietStormExtreme
Threshold
Kp 7-8
Magnetic latitude
~39°N
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 29 Jun, 21:45 UTC

7-day outlook for Wakkanai

Today
29 Jun
1
Quiet
Tomorrow
30 Jun
3
Quiet
Wed
1 Jul
3
Quiet
Thu
2 Jul
3
Quiet
Fri
3 Jul
3
Quiet
Sat
4 Jul
3
Quiet
Sun
5 Jul
3
Quiet

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

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What Kp is needed here?

Wakkanai sits at a magnetic latitude of approximately 39°N. 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 7-8 before the auroral oval expands far enough south to be visible from here.

At Kp 7-8, visibility is possible from Wakkanai 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 Wakkanai

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

Cape Soya

Get directions ↗
Bortle Class 1-2 - Excellent dark sky 30 km from Wakkanai - approximately 35 minute drive

Japan's northernmost point, 30 km north of Wakkanai on Route 238. The cape faces north over the La Perouse Strait toward Sakhalin island, 43 km away. Essentially zero light pollution to the north and east. The open coastal heath gives unobstructed sky in the northern direction. In winter, accessible by a maintained road; the cape marker monument is a landmark foreground.

Rishiri Island

Get directions ↗
Bortle Class 1-2 - Excellent dark sky 20 km offshore from Wakkanai - approximately 2 hour ferry

A volcanic island 20 km offshore from Wakkanai, accessible by ferry (1-2 hours depending on service). The island is centered on Rishiri-Fuji (1,721 m), an almost perfectly conical dormant volcano. No significant light pollution on the island - the small fishing town of Oshidomari is the only settlement. The north coast of the island faces open sea with the volcano as a prominent backdrop.

Sarobetsu Plain

Get directions ↗
Bortle Class 1-2 - Excellent dark sky 40 km from Wakkanai - approximately 40 minute drive

A flat coastal wetland south of Wakkanai on the Japan Sea side, covering 6,700 hectares of open bog and grassland. No artificial light within the plain itself. The 360-degree open horizon is unusual for Japan. Accessible from Route 106 near Toyotomi town; the plain faces north and west with no horizon obstruction.

When to go

Best time to see the northern lights in Wakkanai

At 39°N magnetic latitude, Wakkanai sits at the lower end of regular aurora territory. Only the deep mid-winter months of November through January offer nights dark enough for aurora to be visible, and only then when a significant geomagnetic storm pushes the auroral oval this far south.

Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Wakkanai's latitude.

Outside November through January, twilight is too bright for aurora viewing even during significant storms. The season is short, but the equinox months on either side of winter can extend it slightly when storm timing aligns.

Up to 8 locations

Wakkanai

Japan

Unlikely
Kp 1 need Kp 7-8
Checking darkness…
Abashiri

Japan

Unlikely
Kp 1 need Kp 8-9
Checking darkness…
Sapporo

Japan

Unlikely
Kp 1 need Kp 8-9
Checking darkness…
The odds

How often does the aurora appear in Wakkanai?

Average nights per month the Kp reached Wakkanai's threshold of 7+, from 15 years of geomagnetic data (2010–2024).

0.1Jan
0.1Feb
0.1Mar
0.1Apr
0.1May
0.1Jun
0.1Jul
0.1Aug
0.1Sep
0.1Oct
0.1Nov
0.1Dec

Counts the Kp 7+ 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 Wakkanai

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

1st
January
0.1
avg aurora nights
Requires an extended stay
2nd
February
0.1
avg aurora nights
Requires an extended stay
3rd
March
0.1
avg aurora nights
Requires an extended stay

Best window

The January to March window averages 0 aurora nights - the strongest consecutive stretch of the year.

How long to stay

Aurora at this latitude requires patience - allow as many nights as possible during January.

From the community

Aurora photographs from Wakkanai

Real photos sourced from Wikimedia Commons.

Aurora over Wakkanai Aurora over Wakkanai
Aurora over Wakkanai Aurora over Wakkanai
Aurora over Wakkanai Aurora over Wakkanai
Aurora over Wakkanai Aurora over Wakkanai
Questions

Common questions about aurora in Wakkanai

Can you see aurora from Wakkanai?
Wakkanai is Japan's northernmost city and its best-positioned spot for aurora, but the bar is still high. It sits at about 45°N geographic latitude and only around 39° geomagnetic latitude - the latitude measured from Earth's magnetic poles, which is what actually decides where the aurora reaches. 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 7-8, a G3 storm or stronger, before aurora shows low on the northern horizon over Cape Soya. Kp is a 3-hour global average, so a forecast reaching that level means tonight is worth checking, not a guarantee.
What Kp is needed for aurora in Wakkanai?
Kp 7-8 from dark sites like Cape Soya and Sarobetsu Plain. That is the lowest threshold anywhere in Japan, because Wakkanai sits closer to the auroral oval than the rest of the country, but it still takes a major geomagnetic storm. The strong storms of the 2024-2025 solar maximum, such as the May 2024 G5 event, produced aurora here when much of Hokkaido further south saw little. Expect a red glow low on the northern horizon rather than overhead curtains, and it is often clearer on a long-exposure photograph than to the naked eye.
How does Wakkanai compare to Abashiri for aurora?
Wakkanai sits slightly higher in geomagnetic latitude, around 39° against Abashiri's 37°, so its threshold is a step lower: Kp 7-8 versus Kp 8-9. Cape Soya faces north over open sea with no land for hundreds of kilometres in that direction, which makes Wakkanai the better aurora position in Japan. Abashiri has the drift ice draw in January and February, which may matter for itinerary planning.
How do you get to Wakkanai?
Wakkanai is 5-6 hours from Sapporo by limited express train or 4-5 hours by car on Route 40. Wakkanai Airport has flights from Sapporo (around 30 minutes) and seasonal services. The ferry to Rishiri and Rebun islands departs from Wakkanai port, with services running once or twice daily in winter.
Is Rishiri Island worth visiting for aurora?
Yes, if the ferry schedule allows. Rishiri sits at the same ~39° geomagnetic latitude as Wakkanai, so the Kp 7-8 threshold is the same. The island has low light pollution and Rishiri-Fuji gives a distinctive foreground for aurora photography. In winter, ferry services run once or twice daily, so overnight stays are necessary to be in position for a clear evening. The island is also a summer hiking destination for the volcano trail, giving a reason to visit outside the aurora window as well.
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