Northern Lights Forecast
for Porjus
Porjus, Sweden — about 64.8° geomagnetic latitude. In Swedish Lapland, between Gällivare and Jokkmokk. The Lulevatten lake, frozen solid in winter, opens a wide, flat plain.
Where to look
From the lakeshore, face north; the flat, dark plain opens the horizon. Foreground: the ice and the treeline.
Can you see the aurora in Porjus?
Yes. From a dark site you need about Kp 2 for a faint glow low on the northern horizon, and roughly Kp 4 for bright aurora directly overhead. At 64.8° geomagnetic latitude Porjus sits on the edge of the oval — you want an active night.
Over the last 12 months the planetary Kp peaked at the levels Porjus needs on the days shown — out of 365. Kp is a global index, so these are the odds the sky was active enough; you still need clear, dark skies here. In 94 years on record the strongest day hit Kp 9.
The full Kp archive, 1932 → today →When to go
The season runs late September to late March, when the nights are long and dark. You also need clear skies and a low moon — even a strong Kp is useless under cloud. Check tonight's live call above, then plan a night around the dark window, cloud and moon.
Region forecast · all of Kiruna →
From the bookChasing PinkPorjus is one of the spots in the book — seven winters of chasing the northern lights, free to read here.Start reading →