Northern lights Wakkanai tonight
Wakkanai is Japan's northernmost city, sitting at 45° magnetic latitude at the tip of Hokkaido. It has Japan's lowest aurora threshold - Kp 5-6 from Cape Soya, the country's northernmost point. During the 2024-2025 solar maximum, Wakkanai has recorded aurora events that did not reach other Hokkaido cities. The city is the practical starting point for Japan aurora watching. Best season: October to March.
Aurora visibility - Wakkanai
Unlikely tonight
Kp 1 is well below the Kp 5–6 threshold needed for aurora to be visible from Wakkanai.
Current Kp
1
of 9
7-day outlook for Wakkanai
Today
15 May
Tomorrow
16 May
Sun
17 May
Mon
18 May
Tue
19 May
Wed
20 May
Thu
21 May
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
What Kp is needed here?
Wakkanai 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 Wakkanai 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 Wakkanai
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Cape Soya
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
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
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.
Best time to see the northern lights in Wakkanai
At 45°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.
Related pages
Northern Lights Japan
Japan aurora hub - all Hokkaido forecast locations.
Northern Lights Abashiri Tonight
Abashiri - northeast coast, 3 hours southeast of Wakkanai.
Northern Lights Sapporo Tonight
Sapporo - transport hub, 5 hours south.
What Is the Kp Index?
What Kp 5-6 means for aurora at 45° magnetic latitude.
Northern Lights Viewing Tips
Planning an aurora watch and selecting dark sites.
Common questions
Aurora from Wakkanai - Japan's northernmost city and Cape Soya.
