Seasons & weather

Iceland in September: Northern Lights Return, Crowds Leave, Colours Arrive

Drive Reykjavik team · 4 min read

Quick facts

  • Daylight: about 13.5 hours on 1 September, about 11 by the 30th — long enough for every classic day trip.
  • Temperature: usually 6–11 °C; the first night frosts arrive inland late in the month.
  • Northern lights: the season opens properly — dark nights are back, and often milder than midwinter.
  • Colours: the moss, birch and tundra turn gold and red from mid-September.
  • Réttir: the traditional sheep round-up happens across the country in September.
  • Crowds and prices: a clear step down from August — hotels cheaper, famous stops quieter.

Iceland in September is the compromise that isn't one. You keep nearly everything summer offers — open roads, green-gold landscapes, long days — and get back the two things August can't give: dark skies for the northern lights, and space at the famous sights.

Northern lights: the season opens

Bright green aurora borealis above a dark Icelandic landscape
September nights are dark enough again — and often milder than midwinter hunts.Photo: Piotr Kowalonek / Pexels

From the first days of September the nights are properly dark, and statistically the weeks around the equinox (late September) are among the most geomagnetically active of the year. A September aurora hunt is also simply more pleasant: you stand outside at 5 °C instead of −5 °C. Our private northern lights tour runs from the start of the month — 48,000 kr per car (1–4) or 65,000 kr per van (5–7), hotel pick-up, and we drive to where the cloud map is clear. Background reading: the best time to see the lights.

Autumn colours and the réttir

A river flowing through autumn-coloured grassland in Iceland
From mid-September the landscape turns gold and rust.Photo: David Hitchcock / Pexels

Iceland has no forests to speak of, but its autumn is still spectacular: the birch scrub, blueberry heath and moss turn every shade of gold, orange and red, usually peaking mid-to-late September. It is also réttir season — the traditional round-up when farmers and whole communities ride into the hills to bring the sheep home, sorting them in circular pens with songs and coffee. If you are lucky with timing, your driver can find one; it is as real as Icelandic culture gets.

What to do in September

  • [Golden Circle](/tours/golden-circle) (90,000 kr per car): quieter car parks, golden light on Gullfoss.
  • [South Coast](/tours/south-coast) (125,000 kr per car): waterfalls still full from summer, beaches uncrowded.
  • [Jökulsárlón](/tours/jokulsarlon) (170,000 kr per car): boat trips usually run to late September.
  • [Snæfellsnes](/tours/snaefellsnes): Kirkjufell with autumn colours is the photographers' version.
  • Hot springs: the Reykjadalur hot river and the lagoons are perfect in crisp air.
  • Evenings: aurora watch — two or three attempts across a 4–5 day trip is realistic.

Weather and roads

September is a shoulder month in the honest sense: mostly mild and workable, with the year's first proper autumn storms possible late in the month. The main roads stay easy — no winter driving skills needed yet — but the weather can reshuffle a day, so keep the plan flexible. Your airport transfer is from 20,500 kr per car, with 45 minutes of free waiting if your flight runs late. More on the season in Iceland in autumn.

FAQ

Comparing months? See Iceland in August for the summer version, Iceland in December for deep winter, and the month by month guide for the full picture.

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