Iceland weather

Our guide to the weather in Iceland during September

10

Average high

2

UV Index

131mm

Monthly rainfall

81%

Humidity

September is a great month to visit Iceland. Before the harsh winter conditions descend on the island, the traditional Réttir (or Big Round-Up) takes place - an event and celebration that involves a lot of sheep! We've looked at the most up-to-date weather data for Iceland, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Iceland weather in September.

What's the temperature like in Iceland during September?

The temperature is extremely stable in September with average highs of 10℃ and lows just 3℃ 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 Iceland 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 Iceland 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 Iceland 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.

Holidays in Iceland

Holiday deals you might be interested in

...

Iceland: 4-night Northern Lights adventure with included tours

£698pp

Breakfast • Flights

4-nights • April

...
Save 35%

Iceland: 2-night Reykjavik stay with Northern Lights tour + return flights

£199pp

Accom only • Flights

2-nights • Dec/Jan

...

Iceland, Niagara Falls and NYC multi-centre trip with flights + transfers

£799pp

Flights

6-nights

...

Reykjavik: 3-day break to the land of fire and ice

£1254pp

Breakfast • Flights

3-nights • February

...

Iceland: 4-night break in contemporary city style

£359pp

Breakfast • Flights

4-nights • April

...

Iceland: 3-night stay in Reykjavik w/Northern Lights, breakfast, flights +transfers

£467pp

Breakfast

3-nights • April

...

Iceland: 4-night break w/flights & Northern Lights Tour

£576pp

Accom only

4-nights • April

...

Iceland: 3-night break w/flights, transfers & Northern Lights tour

£478pp

Breakfast

3-nights • April

...
Save 24%

Iceland: Chill out in Reykjavík and enjoy a Northern Lights tour w/flts

£139pp

Accom only • Flights

2-nights • January

Join the club...

Be the first to hear about discounted holidays, flash sales and amazing travel competitions to Iceland!

Books inspired by Iceland

Our hand-picked selection of books to get you in the mood for your Iceland holiday

Iceland Blog posts

From the UK's most popular travel bloggers

...

My Perfect 3 Days in Iceland Itinerary

12th February 2026 by The World in My Pocket

Iceland has long been a dream destination for many, and for good reason. Spending three days in this stunning country during winter proved to be an unforgettable experience. From majestic glaciers and breathtaking waterfalls to the unique charm of Reykjavik and the enchanting Northern Lights, Iceland offers a wealth of sights and adventures, even within a brief escape. Here’s a detailed itinerary to make the most of your three days in this remarkable land....

...

Iceland Itinerary – 7 Day Family Trip

22nd January 2026 by Globalmouse Travels

Exploring Iceland with children may seem like a daunting task, but it’s one of the most family-friendly road trip destinations in Europe. With safe roads, manageable driving distances, breathtaking scenery, and a vibrant outdoor culture, Iceland offers an accessible adventure for families. Whether you have toddlers or teenagers in tow, a carefully crafted itinerary can help you make the most of your seven-day escape in this stunning country....

...

Why Reykjavik Should Be Your Next Holiday Destination

10th December 2025 by The World in My Pocket

Reykjavik is a city that lingers in the memory long after your return. With the charm of a compact capital and the stunning natural beauty of Iceland right on its doorstep, it offers a unique blend of urban comfort and dramatic landscapes. Picture sipping coffee by the harbour in the morning and then exploring the breathtaking scenery that surrounds this vibrant city as the day unfolds....

...

Iceland’s highlands: Staying at the incredible Highland base

27th November 2025 by Stoked to Travel

After ticking off the Golden Circle, venturing to the South Coast, and soaking in the stunning landscapes of the Reykjanes Peninsula, it’s time to delve deeper into Iceland’s rugged heart. The Highlands offer a unique escape, and staying at the Highland Base provides an unforgettable experience amidst breathtaking scenery. Join us as we explore this remarkable destination and what it has to offer....

...

The Retreat at Blue Lagoon: The Best Luxury Hotel in Iceland

23rd November 2025 by Stoked to Travel

For those seeking a touch of luxury in Iceland, The Retreat at Blue Lagoon stands out as an exceptional choice. Nestled within the stunning landscape of the Blue Lagoon, this hotel offers a unique blend of relaxation and indulgence, making it a perfect escape for travellers looking to unwind in style....

...

Visiting the Blue Lagoon in Iceland: A Complete Guide

23rd November 2025 by Stoked to Travel

Iceland's Blue Lagoon is a must-visit destination for anyone exploring this stunning volcanic island. Renowned for its striking blue waters and rejuvenating geothermal properties, the lagoon offers a unique experience that combines relaxation with breathtaking natural beauty. In this guide, you'll find everything you need to know to make the most of your visit to this iconic attraction....

...

Iceland in summer: Travel guide

29th July 2025 by Coco Butter Blog

Thinking of heading to Iceland this summer? You're in for a unique experience. The Icelandic summer can be a bit of a paradox; one moment, you might be basking in the midnight sun, while the next, you could be reaching for a warm hat and gloves. This guide will help you navigate the quirks of summer in Iceland, ensuring you're well-prepared for whatever the weather throws your way....

Weather in Iceland

Our month-by-month guide to the weather and climate in Iceland

1.6

Iceland weather in

January
1.8

Iceland weather in

February
2.7

Iceland weather in

March
5.3

Iceland weather in

April
8.5

Iceland weather in

May
11.8

Iceland weather in

June
13.7

Iceland weather in

July
13.1

Iceland weather in

August
10.2

Iceland weather in

September
6.4

Iceland weather in

October
3.4

Iceland weather in

November
0.9

Iceland weather in

December