Northern lights in Reykjavík in December

A solid choice — 31% of December nights offer a real viewing window.

31%of nights offer a window
12 hof darkness per night
70%of days with enough solar activity
45%of nights with a clear hour

The numbers behind it: December nights in Reykjavík average about 12 dark hours, geomagnetic activity reaches local viewing levels on 70% of days, and 45% of nights offer at least one reasonably clear hour after dark.

Neither clouds nor solar activity dominates — December failures are usually bad single-night luck. Several nights in a row is the honest insurance policy.

Numbers come from 1996–2025 Kp records (GFZ Potsdam) and 2015–2024 hourly cloud history for Reykjavík itself — the full method is on the methodology page. Travelling soon? Check tonight's live Reykjavík forecast.

December against the rest of the year

  1. Jan32% of nights
  2. Feb30% of nights
  3. Mar29% of nights
  4. Apr24% of nights
  5. Maymidnight sun
  6. Junmidnight sun
  7. Julmidnight sun
  8. Aug16% of nights
  9. Sep31% of nights
  10. Oct29% of nights
  11. Nov31% of nights
  12. Dec31% of nights

November in Reykjavík · January in Reykjavík · full year overview

December elsewhere under the oval