Is it dark all day in winter?
No. On the shortest day Reykjavík's sun is up from 11:22 to 15:29, and twilight adds over an hour either side: it's light enough to walk without a torch from about 10:03 to 16:48. The low sun paints long pink-and-gold light all day — beautiful, and blinding at the wheel.
Does Iceland have the midnight sun?
Almost. In Reykjavík the June sun sets just after midnight and rises again at 02:55, and the sky stays light all night. The true midnight sun — the sun never setting — is only seen from the far north, such as Grímsey island on the Arctic Circle.
Mountains change the count
These are sea-level figures. In the fjords the mountains hide the low winter sun: in Ísafjörður it doesn't reach the town for weeks around midwinter, and locals celebrate its return with sun coffee (sólarkaffi) in late January.