Reykjavik weather in September
“Green, wet, atmospheric. Bring proper waterproofs.”
Roughly 18 rainy days across the month, on average.
September in Reykjavik brings crisp autumn conditions with average highs of 10.3°C (50.5°F) and lows of 5.9°C (42.6°F). Expect roughly 17.6 rainy days throughout the month with 136.7mm of precipitation, so waterproof gear is essential. You'll enjoy around 6.2 hours of sunshine daily—still reasonable for exploring, though daylight is noticeably shorter than summer months.
This is shoulder season in Iceland, marking the transition from peak summer tourism to quieter autumn. The Northern Lights may start appearing late in the month if skies clear. Reykjavik's cultural calendar includes various local events and festivals celebrating Icelandic heritage. Crowds thin considerably compared to June-August, making it ideal for travelers seeking a more authentic experience without overwhelming tourist masses.
September 2026 is an excellent choice if you want milder weather than winter but fewer visitors than summer. Pack layers and waterproof clothing to handle the changeable conditions. Book accommodations and car rentals in advance, as many tourists still visit during this shoulder period. The city remains vibrant with restaurants, museums, and nightlife fully operational.
What to pack for Reykjavik in September
- •A compact travel umbrella — one you'll actually carry
- •A merino base layer for the cold evenings
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Reykjavik in September
- →Lightweight fleeceAmazon · shop this
- →Merino travel socksAmazon · shop this
- →Packable rain jacketAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Waterproof dry bagAmazon · shop this
- →Universal travel adapterAmazon · shop this
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Where to stay in Reykjavik
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Reykjavik across trusted platforms.
Compare hotels on Booking.com→Things worth doing
Golden Circle day tour, whale watching excursions, Blue Lagoon geothermal spa, hiking Reykjanes Peninsula, exploring local museums and cafes.
Other places with a similar climate right now
Reykjavik in September — FAQ
Q01Is September a good time to visit Reykjavik?
Is September a good time to visit Reykjavik?
It is a fair time to visit — expect variable conditions and plan flexibility. In September, Reykjavik averages a high of 10°C (51°F) and a low of 6°C (43°F), with 137mm of rainfall across roughly 18 rainy days.
Q02What is the average temperature in Reykjavik in September?
What is the average temperature in Reykjavik in September?
The average high temperature in Reykjavik during September is 10°C (51°F), with an average low of 6°C (43°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Reykjavik have in September?
How many rainy days does Reykjavik have in September?
Reykjavik averages approximately 18 rainy days in September, with a total monthly rainfall of about 137mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Reykjavik in September?
What should I pack for Reykjavik in September?
For Reykjavik in September, pack a merino base layer for evenings, a compact umbrella or waterproof jacket, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Reykjavik in September?
How crowded is Reykjavik in September?
Tourist crowds in Reykjavik during September are typically moderate. Consider this when planning accommodation — prices track crowd levels closely.