Month autumn
Iceland in September
Iceland in September
September is a quieter sweet spot — autumn colours, returning darkness, the start of natural ice cave season and reasonable prices.
Key facts
- Avg high
- 10°C
- Avg low
- 5°C
- Daylight
- 11–15 h
- Season
- autumn
Book early
- Northern lights tours
- Ice cave tours (late month)
What to pack
- Warm layers
- Waterproof
- Hiking boots
Things to avoid
- Last-minute Highlands plans (closing dates vary)
Frequently asked questions
When do the F-roads close in Iceland?
Most close in late September or early October, depending on weather.
Is September aurora-season?
Yes — September is the start. Equinox-period activity is often strong.