| Period | Best for | Good to know |
|---|---|---|
| June to August | Very long days, F-roads open | Book early; the Blue Lagoon is open 07:00 to 23:00 from 15 June to 20 August; see car rental |
| May and September | Shoulder seasons | Fewer crowds; days still long; aurora season starts in September |
| September to mid-April | Northern lights | See northern lights |
| November to March | Ice caves | See ice caves; the Blue Lagoon closes at 22:00 until 31 December, then 20:00 from January |
| December | Very short days (about 4 hours of daylight in Reykjavik) | Watch the roads |
Offer read on 6 November 2026; price and rating change with the date. Blue Lagoon hours from bluelagoon.com, 6 November 2026.
Seasons in short
- Summer (June to August): the sun barely sets around the June solstice, and the interior tracks are open. This is the season for long days and the interior roads. Book the lagoon and tours early.
- Autumn (September to October): aurora season starts, the crowds thin and the days shorten quickly, from about 11 to 8 hours of daylight in October.
- Winter (November to March): the northern lights are best on clear, dark nights, and the ice caves open, but roads need checking for snow and ice, so keep a spare day.
- Spring (April to May): the days lengthen fast, from about 17 to nearly 20 hours of daylight in May.
Choosing your month
Pick June to August for the Highlands and the longest days. Pick November to March for an ice cave and for aurora nights. Pick May or September for fewer crowds and still long days.
Month by month
Open a month for its weather, opening hours and events.
| Month | At a glance |
|---|---|
| January | About four hours of daylight, long aurora nights |
| February | Winter Lights Festival, aurora season |
| March | Highs of 1 to 4°C |
| April | Highs of 2 to 6°C |
| May | 2 to 11°C, 17 to nearly 20 hours of daylight |
| June | Highs of 10 to 13°C |
| July | 8 to 15°C, 18 to 20 hours of daylight |
| August | Highs of 10 to 15°C |
| September | Highs of 9 to 12°C |
| October | 2 to 7°C in Reykjavík, daylight dropping from 11 to 8 hours |
| November | 0 to 5°C, 8 to 5 hours of daylight |
| December | 4 to 5 hours of daylight, northern lights |
What to avoid
- Driving the Highlands in spring or autumn: F-roads and many highland tracks are open only for a short part of the summer, according to the UK government (gov.uk, 6 November 2026). Choose a summer date for them.
- A long winter drive in December: with about 4 hours of daylight, a 10-hour tour such as the South Coast lasts longer than the light. Choose a tour that starts in Reykjavik.
- Planning around one weather date: the glacier walks, the ice caves and Silfra can be cancelled for conditions. Keep one flexible day in your plan.
Tips
- Roads: check road.is before every drive. Many highland tracks need a 4x4.
- Light: around the December solstice you have about 4 hours of daylight.
- Northern lights: tours are most reliable on clear nights; the listings promise a free retry, not a sighting.
- Plan: see 7 days in Iceland.
Before you book flights, see the Iceland entry requirements for Americans for the Entry/Exit System and ETIAS.
FAQ
What is the best month to visit Iceland?
Summer for driving and long days; winter for the northern lights and ice caves.
When can you see the northern lights?
About September to mid-April, at night.
When are ice caves open?
In winter, roughly November to March, depending on conditions.
The Iceland Authority editorial team, 6 November 2026.
