Iceland in September brings 5-10°C temperatures, 60-80mm rainfall, and moderate tourist crowds. Here's everything you need to know to plan the perfect September trip to Iceland — from weather patterns and costs to events and packing essentials.
Expect This Weather
Iceland in September averages 5-10°C with approximately 60-80mm of rainfall. Northern lights season begins. Days are generally pleasant with moderate daylight hours. The weather makes September one of the best times to visit.
Crowds & Costs
Tourist levels are moderate in September. A sweet spot for value — prices are reasonable and you won't fight crowds at major sites. Booking 3-4 weeks ahead is usually sufficient.
Prices are near average — you'll find good deals without the peak-season markup.
Best Activities
Top highlights: Northern lights season begins, autumn colors, lower prices, fewer crowds.
September is particularly good for outdoor activities, hiking, and nature exploration. Indoor cultural sites and cozy restaurants make for memorable days.
Packing Essentials
Essential packing list: Warm waterproof layers, thermals, hat and gloves, tripod for aurora. A warm hat and gloves are essential for early mornings and evenings.
Should You Go?
Yes — September is one of the best months to visit Iceland. The combination of pleasant weather, manageable crowds, and fair prices makes it ideal for most travelers.
The Real Trade-Off: September Is Iceland's Closing Window, Not Its Quiet Twin of Summer
September rewards you for accepting a moving target. Daylight collapses fast inside the month: Reykjavik gets around 14 hours at the start and only about 11.5 by the end, with the autumnal equinox falling near September 23. That swing matters because it reopens the aurora window while still leaving enough daytime to drive the Ring Road comfortably. Plan around the calendar, not a single forecast.
Two September-specific draws are worth structuring a trip around:
- Rettir, the farmers' sheep roundup, runs from early September into October across rural districts. Many roundups end in a rettaball, a community feast with folk singing and mutton dishes you will not find advertised on a tour site.
- Golden tundra colour peaks as the dwarf birch and bilberry turn, strongest mid-to-late month around Thingvellir and the east fjords.
The honest catch is access, not crowds. Highland F-roads close on no fixed schedule: the F208 to Landmannalaugar is your safest bet late in the month, while Askja sits at roughly a one-in-four chance with no wardens or lodges left. Add rain on about 15 to 20 days. Check umferdin.is the morning you drive, and treat any inland plan as provisional.
FAQ
What is the weather like in Iceland in September?
Temperatures range from 5-10°C with about 60-80mm of rainfall. Northern lights season begins.
Is September too crowded in Iceland?
Crowd levels are moderate. You'll find a good balance of atmosphere without overcrowding.
What should I pack for Iceland in September?
Warm waterproof layers, thermals, hat and gloves, tripod for aurora.
📅 Other months: Iceland in June · Iceland in July · Iceland in August
Plan Your Iceland Trip
More Iceland guides: Best Time to Visit Iceland · How Much Does a Trip to Iceland Cost?
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Written by
John Morrison is the founder and lead travel writer at Packzup. Over the past decade he has explored destinations across Africa, the Americas, Asia, Europe, the Middle East, and Oceania — always self-funded, never on a press trip.