Southern in Decemberhow the month reads

• Closed
  Highland F-roads (Landmannalaugar, Askja)

  the interior is shut for winter - F-roads stay gated until the snow clears and the rivers drop to a fordable depth

  Sources: mapoficeland.is, camper.is

• Closed
  Laugavegur trek

  the huts and the highland bus link close with the F-roads

  Sources: guidetoiceland.is, mapoficeland.is

• At its best
  Natural ice caves (Vatnajokull)

  the glacier is cold enough for the natural caves to be stable, and guided tours run

  Source: guidetoiceland.is

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

• Temperature
  -1°C
  −4.9°C vs. yearly mean
• Month rank
  12 of 12
  for Southern
• Best months
  June · July · January
  highest regional score

Parts of Iceland carry a higher advisory — up to level 2, "Exercise increased caution". The governments concerned name a region rather than a boundary, so the carve-out is not drawn on the map and is not reflected in the combined level above. Follow the source links for where it applies.