Northern lights Rishiri Island tonight
Rishiri Island sits at 45° magnetic latitude in northern Hokkaido, accessible by ferry from Wakkanai (approximately 2 hours). The Kp threshold is 5-6. The island centres on Rishiri-Fuji, a 1,721 m volcanic cone visible from every position on the island - aurora over the open Japan Sea with the volcano silhouette behind is a foreground specific to this location. Set a push notification before you travel. Best season: October to March.
Aurora visibility - Rishiri Island
Unlikely tonight
Kp 1 is well below the Kp 5–6 threshold needed for aurora to be visible from Rishiri Island.
Current Kp
1
of 9
7-day outlook for Rishiri Island
Today
3 Jun
Tomorrow
4 Jun
Fri
5 Jun
Sat
6 Jun
Sun
7 Jun
Mon
8 Jun
Tue
9 Jun
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
auroratonight.space
What Kp is needed here?
Rishiri Island sits at a magnetic latitude of approximately 45°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 5–6 before the auroral oval expands far enough south to be visible from here.
At Kp 5–6, visibility is possible from Rishiri Island 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 Rishiri Island
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Otatomari Pond
Get directions ↗Otatomari Pond is a small lake on the south coast of Rishiri Island, directly below the Rishiri-Fuji volcano (1,721 m). The pond reflects the volcano's conical summit in calm conditions - in daylight this is one of the most photographed views in Hokkaido. At night, with aurora active, the combination of the volcano silhouette and the sky reflection gives a composition available nowhere else in Japan. Bortle Class 2. The car park is lit but the far shore of the pond gives a dark position. The water is accessible from the main island road year-round.
Senhoshi Cape
Get directions ↗Senhoshi Cape on the western coast faces the Japan Sea with no land visible to the west or north. Bortle Class 1-2. The cliff-top positions above the cape give an elevated view over open ocean. Rishiri-Fuji rises behind to the east as a dark silhouette. At Kp 5, aurora appears above the western horizon over the sea. The cape road is accessible by car; the final section to the headland may require walking on foot in winter conditions. Cold and exposed - wind from the northwest is common in winter and significantly increases wind chill.
Kutsugata Cape north shore
Get directions ↗The north shore of Kutsugata Cape faces across the La Perouse Strait in the direction of Sakhalin Island. Bortle Class 2. The low coastal terrain gives an unobstructed northern horizon - the most important direction for aurora at this latitude. Rishiri-Fuji is visible behind and to the south, providing a landscape reference. The harbour at Kutsugata is small and has minimal lighting. Combined with Senhoshi Cape on the west coast, this gives two distinct aurora photography positions within 20 minutes of each other on the island road.
Best time to see the northern lights in Rishiri Island
At 45°N magnetic latitude, Rishiri Island 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 Rishiri Island'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.
Other Japan aurora forecasts
← Japan overviewWakkanai
Japan's northernmost city, Cape Soya, best aurora position
Rebun Island
Japan's northernmost inhabited island, Sukoton Cape, Bortle 1-2
Hokkaido
Japan's northern island, 43-45° magnetic, Shiretoko Peninsula
Compare nearby locations
Up to 4 locations
How often does aurora appear in Rishiri Island?
Average nights per month when Kp reaches 5+ - based on 15 years of data
Best month
March
Average aurora nights per year
16
Kp threshold
5+
Based on 15 years of geomagnetic data (2010-2024). Shows nights when Kp reached 5+ 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 Rishiri Island
Based on 15 years of geomagnetic data
March
1.6
avg aurora nights
Requires an extended stay
September
1.5
avg aurora nights
Requires an extended stay
October
1.5
avg aurora nights
Requires an extended stay
Best window
The August to October window averages 4 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 March.
Related pages
Northern Lights Japan
Japan aurora hub - Hokkaido forecast and threshold guide.
Northern Lights Wakkanai Tonight
Wakkanai - ferry departure point, Cape Soya, Kp 5 threshold.
Northern Lights Rebun Island Tonight
Rebun Island - Japan's northernmost inhabited point, Sukoton Cape.
Northern Lights Alert
Push notifications when Kp 5 is reached - essential for island trips.
Japan Northern Lights Guide
Full guide to aurora in Japan - when, where, and realistic expectations.
Common questions
Aurora at Rishiri Island - Rishiri-Fuji backdrop, ferry logistics, and comparing with Rebun Island.