Reykjavik weather
in September
“Green, wet, atmospheric. Bring proper waterproofs.”
Roughly 18 rainy days across the month, on average.
In september, Reykjavik settles into its quieter, cooler pace. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 10°C (51°F), cooling to 6°C after sunset. Expect meaningful rain — some 18 wet days across the month. Pack accordingly and let the weather choose your afternoons.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
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
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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.