How cold is Iceland in September Really?

If you’re coming to Iceland in September and you’re wondering, ‘How is it in Iceland?’ 

Then this article is for you! 

In short; 

The average temperature in Iceland in September is around 11°C (52°F) highs and the lows around 6°C (43°F). 

But it will 100% feel colder due to the wind. 

We’re heading into winter even though we’re not quite there yet. 

And that comes with increased storm activity. 

It’ll rain, but not more so than other months.  

You want to be ready for cold and windy days, but sunny with mild temperatures as well.  

So make sure you’re wearing good outdoor clothes. 

If you don’t own them, think about renting them. Check out our selection here. 

Weather in Iceland in September 

Now the daily highs are around 11°C while the lows are 6°C. 

But the wind, which is always present, will make it feel colder. 

You can expect wind speed from 3mps(6.7mph) to 10mps (22mph) 

If the windspeed is 5mps for example, you can definitely knock a degree or two off the temperature. 

3-5mps is a normal day. 

Then if you’re by the coast or inland it will change.  

It might be a bit windier by the coast, but a bit warmer as well. While the highlands tend to be colder. 

So if it gets windy while you’re in the highlands, it’ll feel very cold. 

Daylight Hours & Seasonal Changes 

In early September you can expect around ~14 hours daylight while in late September: ~11 hours. 

And the northern lights are quite intense during this month, so it’s a good time to see them. 

Conditions & Rainfall  

September isn’t a lot rainier than other months, but you can expect regular rain.  

A mix of sunshine, rain, and wind in a single day. 

While the chances of storms increases as we move into winter.  

You can expect at least a single a yellow, orange, or red weather warning. 

Yellow is the most common one and won’t require you to cancel anything.  

An orange or red is a different story. 

Personally, I love a windy day. And if you find yourself in a red warning, make sure to read this article and stay safe.  

But going out for a short walk in a red warning is really fun. 

Just make sure to be well dressed! 

What to Wear in Iceland in September 

Here is a brief explanation of what you should wear. 

For more details, check out this article we wrote. 

• Base layer 

• thermal underwear 

• I love merino wool. 

• Mid-layer  

• fleece or a very light down jacket 

• I like a fleece 

• Outer layer  

• Winter Coat (Parka) 

• Shell 

• I like the winter parka, but the shell is better for hikes. 

Footwear & Accessories  

• Waterproof hiking boots. 

• Mid or high top 

• I like mine to be made of leather and gore-tex 

• Hat, gloves, scarf/neck gaiter. 

• I’m not a fan of scarfs, a neck gaiter is better. 

• But I just zip up my fleece and parka 

• Sunglasses for glare, hand warmers for long outdoor days. 

• The glare can really get you, especially if you’re driving. 

Rent Clothes Iceland 

If you don’t own the clothes you need, consider renting them. 

We at IcelandCover have all the outdoor gear you need to stay warm and cozy so you can enjoy your time in Iceland. 

Why Renting Clothing in Iceland Makes Sense  

• Save luggage space on flights. 

• Avoid buying expensive winter coats/boots for a short trip. 

• Get gear specifically suited to Iceland’s September weather. 

We’re located in the heart of Reykjavik for easy pickup and return! 

I hope you have a better understanding of how cold Iceland is in September! 

And if you have any questions, don’t hesitate to reach out!  

FAQ: How Cold is Iceland in September Really? 

1. What is the average temperature in Iceland in September? 

In Reykjavík, average temperatures in September range from 6°C to 11°C (43°F to 52°F). It can feel colder with wind chill, especially in the countryside or near waterfalls. 

2. Does it snow in Iceland in September? 

Not usually in Reykjavík or the South Coast. However, the highlands and northern parts of Iceland may see early snowfall, especially late in the month. 

3. How windy is Iceland in September? 

Very! September marks the start of Iceland’s windier season. Expect strong gusts, especially near open landscapes, coastlines, or high altitudes. Wind chill can make it feel much colder than the actual temperature. 

4. Is it cold enough to wear a winter coat in September? 

Yes, especially if you’re spending time outdoors, near glaciers, or on tours. You don’t need a full Arctic coat, but a windproof, waterproof outer layer and warm mid-layers are essential. 

5. What should I wear in Iceland in September? 

Dress in layers: 

• Base layer: thermal top and leggings 

• Mid-layer: fleece or wool sweater 

• Outer layer: waterproof & windproof jacket 

• Bottoms: hiking pants + thermals 

• Footwear: waterproof hiking boots  

• Accessories: beanie, gloves, and neck warmer 

If you want to rent it, check out our selection 

6. Can I see the Northern Lights in September? 

Yes! September marks the start of Northern Lights season in Iceland. The nights are dark enough, but you’ll want warm clothing to stay comfortable while waiting outside. 

7. How much daylight is there in September? 

Early September has about 14–15 hours of daylight. By the end of the month, it drops to around 11 hours. Plenty of time for sightseeing, but pack for both warm and cold moments in a single day. 

8. Is Iceland rainy in September? 

Yes! Waterproof clothing is essential, especially if you’re visiting waterfalls or taking day hikes. 

9. Is September a good time to visit Iceland? 

Absolutely. September offers: 

• Fewer crowds than summer 

• Fall colors in the landscape 

• Northern Lights potential 

• Still-accessible roads (mostly) 

Just be sure to dress properly, or rent gear if you’re underprepared. 

10. Should I rent outdoor clothes for September in Iceland? 

If you don’t already own proper outdoor gear, renting clothes in Iceland is a smart and affordable option. It saves luggage space and ensures you’re ready for Iceland’s unique combination of rain, wind, and chill.