While winter can be a spectacular time to visit, temperatures can plummet as low as -30°C, particularly in northern Iceland, with December to February the iciest months. Wind chill can make apparent temperatures feel even lower. Don't avoid Iceland in winter – but pack proper thermal gear!
The Northern Lights appear from September until April – but February to March, and September to October – particularly around the equinoxes – are the best months to see them.
Late November through December and January are seriously lacking in daylight – not an issue for aurora seekers, but frustrating for photographers or outdoor adventurers.
June and July are the months of the midnight sun, which may sound wonderful but expect a few nights of troubled sleep as your body adjusts to the constant Arctic light. And pack an eye mask! By August, the nights begin to darken.
If you want to drive bear in mind that many minor roads – especially in the mountains – are closed from late September to June (and sometime early July) due to snow and ice. Even when open you need a 4WD for most of them.
Orcas visit the Iceland coast in February and March; specialist companies run boat tours and wildlife photography excursions to make the most of this magical spectacle.