September is autumn in fast-forward. The highland grasses turn gold and red, northern lights return to the darkening skies, and tourist numbers drop sharply after the summer rush. With 11 to 15 hours of daylight, prices falling, and the landscape dressed in its most dramatic autumn palette, September is many repeat visitors' favourite month.
Weather & Conditions
Daylight
Highlights
- Northern lights season begins
- Autumn colours across the highlands and lowlands
- Prices dropping from summer peaks
- Fewer crowds at major attractions
- Last chance for highland F-roads before winter closure
Warnings
Highland F-roads closing — most usually close from mid-September; check road.is
Weather can change quickly — check vedur.is and safetravel.is
Some tours and services reducing schedules
Darker evenings — plan driving around daylight and check safetravel.is
What You Can See
- Northern lights: Yes! The season opens. Dark nights return with enough frequency for good viewing.
- Midnight sun: No.
- Puffins: Mostly gone — most leave by mid to late August, a few linger into September.
- Whales: Still good.
- Wildlife: Reindeer (in the east, often only with dedicated tours), seals. Birdlife often thins as migrants leave.
- Landscape: Autumn colours peak in September (timing varies by year and region). Golden grasses, reddening shrubs, dusted snow on peaks. Dramatic.
What's Open & Closed
AvailableCheck first— possible, not guaranteedClosed
- Highland roadsCheck first
Closing. Most F-roads usually close from mid-September. Check road.is daily if planning highland trips.
- Ice cavesCheck first
Vatnajökull's natural ice caves are closed for the season. Guided tours to the Katla ice cave and the Langjökull ice tunnel run year-round.
- WestfjordsCheck first
Conditions vary — check road.is before you drive.
- CampgroundsCheck first
Many close during September.
- Swimming poolsAvailable
Almost all are open.
- OtherCheck first
Major Ring Road attractions generally accessible; roads can close in storms.
Recommended Routes
What to Pack
Transitional gear — warm fleece, waterproof shell, hat and gloves for evening northern lights hunts. Pack for wide temperature swings in the same day, and check vedur.is.
7 Days in Iceland in September
- Day 1
Arrive → Reykjavík → northern lights hunt (check the vedur.is aurora forecast).
- Day 2
Golden Circle — autumn colours at Þingvellir.
- Day 3
South Coast — Seljalandsfoss, Skógafoss, Reynisfjara (check safetravel.is for beach safety).
- Day 4
Jökulsárlón → Diamond Beach → Skaftafell (check road.is and safetravel.is).
- Day 5
East fjords — autumn colours, quiet roads (check road.is).
- Day 6
Mývatn → Akureyri (check road.is).
- Day 7
Snæfellsnes or return to Reykjavík → depart (check road.is).
Budget Snapshot
Crowds & Pricing
Shoulder season returns. Prices generally lower than in summer. Accommodation often easier to find. Early September can still be busy; late September is usually quieter.
September is when Iceland stops being a summer destination and becomes something more nuanced. The crowds thin, the prices drop, and the landscape transforms — gold, red, and bronze replacing the uniform green of July. The highland grasses in particular are spectacular, painting entire valleys in warm autumn tones that last only a few weeks.
And then there are the northern lights. After months of midnight sun, the darkness returns, and with it the aurora. September's displays can be powerful — the solar activity doesn't care about the calendar, and the first big aurora storm of the season often catches September visitors by surprise. Check the vedur.is aurora forecast nightly and get away from Reykjavík's light pollution.
The key tension in September is that the highlands are closing while the lowlands are at their autumn best. If Landmannalaugar is on your list, aim for early September — by mid-month, the F-roads may already be shut. For the Ring Road and coastal attractions, September is near-perfect.
Frequently asked questions
Is September a good time to visit Iceland?
September is excellent — autumn colours, northern lights returning, fewer crowds, and lower prices. The main trade-off is shorter days and weather that can change more quickly than in summer — check vedur.is and safetravel.is.
Can you see northern lights in September?
Yes. September marks the return of northern lights season. The later in the month, the better — longer, darker nights increase your chances.