Reykjavík weather
Our guide to the weather in Reykjavík during September
We've looked at the most up-to-date weather data for Reykjavík, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Reykjavík weather in September.
What's the temperature like in Reykjavík during September?
The temperature is extremely stable in September with average highs of 10℃ and lows just 4℃ lower at 7℃. The UV index will be low at this time of year, so not something to worry about. However, if you're going to be outside for long periods it's always a good idea to apply a small amount of sunscreen to exposed skin.
Does it snow in Reykjavík during September?
Possibly. There's a chance of snow during September but not as much as you might think. Check the local forecast before you leave home so that you can pack appropriate footwear and clothing.
Does it rain in Reykjavík during September?
On average, there will be 11 rainy days during the month, amounting to 130.7mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Reykjavík during September?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. With cool air temperatures, any breeze will feel cold.
Is it too cold to swim in the sea in Reykjavík during September?
The water around Reykjavík is a bracing 10℃ during September and is too cold for for swimming. Those who frequently swim in cold open water might want to take a very quick dip, but prolonged exposure could cause hypothermia. A winter wetsuit will allow longer exposure to the water.
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