Climate guide for Ísafjörður, Iceland

Ísafjörður in September

Weather, crowds & best time to visit

How to read the score (0–10)
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September · Iceland

Best time to visit Ísafjörður in September Weather, crowds & prices

Weather in Ísafjörður in September

Average temperature 5°C, 114 mm of rain, about 0 days with 6+ hours of sunshine and 89% humidity — based on the five most recent complete years of ERA5 data (2021–2025).

September score

4.2/10

Ranked #5 of 12 months

Full year for Ísafjörður
Avg temp
5°C
Rainfall
114 mm
Humidity
89%
Days with 6h+ sun
0
Crowd Density
Moderate Crowds
Average Expenses
$$ · Moderate Cost ($$)

September in Ísafjörður scores 4.2/10 for nature and wildlife travel - an above-average month (#5 of 12). Expect around 5°C, 114 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.

Ísafjörður is the Westfjords’ hub-steep fjord walls, remote hiking, and midnight-sun fishing-town calm. Best window: the short high-summer window when daylight peaks.

September in Ísafjörður: expect compromises

Expect 5°C (41°F) in September. A good month for city streets, viewpoints and long meals; leave swimming for another season.

114 mm of rain signals a properly wet month, with only almost no days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 4.2/10 on the same scale — 5th of 12 months, versus 6.5/10 for the best month here.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella, footwear you can get muddy.

Budget for mid-season pricing, and crowds are moderate.

If your dates are flexible, June is materially better in Ísafjörður — 2.3 points higher on the same scale.

View all 12 months

Ranked by pure climate comfort

Score scale: 0.0 → 10.0Quiet / UncrowdedModerate CrowdsPeak Tourist Rush

Frequently asked

What is the weather like in Ísafjörður in September?
In September, Ísafjörður averages 5°C, 114 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 4.2/10.
Is September a good time to visit Ísafjörður?
September earns a 4.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
How much does it rain in Ísafjörður in September?
Expect about 114 mm of rain in September. Average humidity is 89% and there are about 0 days with 6+ hours of sunshine.

Curated in Ísafjörður

Tickets & experiences

Things to do in Ísafjörður

Ísafjörður, Iceland. Live activities and tours from GetYourGuide, matched to this destination.