Northern Lights Forecast
for Blue Lagoon
Blue Lagoon, Iceland — about 63.5° geomagnetic latitude. On the Reykjanes peninsula near Grindavík — the social option. Watch while you soak; not a trip made for aurora alone.
Where to look
Face north, away from the resort's lights. This is not a dark site — it takes an active night. Foreground: the rising steam.
Can you see the aurora in Blue Lagoon?
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 63.5° geomagnetic latitude Blue Lagoon sits on the edge of the oval — you want an active night.
Over the last 12 months the planetary Kp peaked at the levels Blue Lagoon 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 Reykjavík →
From the bookChasing PinkBlue Lagoon is one of the spots in the book — seven winters of chasing the northern lights, free to read here.Start reading →