Mountain roads closed; some minor roads shut due to weather conditions.
Winter activities on offer, including skiing, snowshoeing, visiting ice caves.
Brief spurts of daylight; long nights with possible Northern Lights viewings.
New Year's Eve in Reykjavík is becoming a big tourist event.
(May & Sep)
Breezier weather; occasional snows in the highlands (access via mountain roads is weather dependent).
Optimal visiting conditions if you prefer fewer crowds and lower prices over cloudless days.
Visitors descend en masse, especially to Reykjavík and the south. Prices peak; prebookings are essential.
Endless daylight, plentiful festivals, busy activities.
Highland mountain roads open to 4WDs, from mid-June or later; hikers welcome.