Iceland’s peak tourist season runs from the beginning of June to the end of August.
This is the time when the nights are bright, the landscape turns into a deep green
and the weather is at its best. Also during this time, all accommodations, including
campsites, are open and the buses are running on a full schedule.
If you don’t want to go when everyone else is visiting Iceland, go in either
May or September. This is when the skies are often clearer and there are far fewer
tourists than in summer.
By the end of September, many tourist offices, campsites and summer hotels in
smaller towns close and some highland bus tours stop operating.
To see the Aurora Borealis, the Northern Lights, you need to go between late
September and May. This is also the best time for skiing.