When to go · September

Iceland in September

A solid time to go

Northern Lights return

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Daytime high

10°C

50°F

Overnight low

5°C

41°F

Rainfall

60 mm

moderate

Crowd levels

medium

manageable

Prices

medium

shoulder

What to expect in Iceland in September

September brings cool weather to Iceland, with daytime highs around 10°C (50°F) and overnight lows near 5°C (41°F). Skies are typically dry with occasional showers, with about 60 mm of rainfall on average. Northern Lights return.

Crowds are manageable in September — busy in popular areas but not overwhelming. Prices sit in the shoulder-season range — not the cheapest, but well off peak. Peak season runs June–August, for context.

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