Aurora forecast / October
Northern lights in Iceland in October
Strong odds and long nights, with winter arriving.
October has plenty of darkness and still-manageable weather. The nights lengthen quickly through the month, so late October is materially better than early October. Highland roads close during the month, so plan around the ring road and the accessible dark-sky spots near it.
How dark does it get in October?
- Reykjavík: 10.8 hours dark enough for aurora
- Akureyri: 10.8 hours dark enough for aurora
Measured on the 15th of the month — the hours the sun sits far enough below the horizon for aurora to be visible.
What October has actually done
Averaged over 20 years (2006-2025), a typical October gives 50.1 hours of clear dark sky — 15.1% of its 332.7 dark hours. Mean geomagnetic activity for the month is Kp 1.7.
Clearest in October: Hella (69.8 h), Grindavík (68.4 h), Reykjavík (65.7 h).
Cloud measured by reanalysis and corrected against Icelandic weather stations; Kp from GFZ Potsdam. How every month compares.
Roads and access in October
F-roads close through the month; ring road normally fine but the first winter storms arrive.
What else is happening
The first ice caves open toward the end of the month.
Every month
January · February · March · April · May · June · July · August · September · October · November · December
Tonight's aurora forecast · Iceland weather map
Somewhere to be while you wait for the month
Step inside Asbyrgi — narrated, and dark enough for the lights when the sky clears.