Guide to Reykjavík in September: Weather, Things to Do & Fall Vibes

Reykjavík in September welcomes the first hints of autumn. The long, bright days of summer begin to fade, replaced by softer light and cooler air. It’s still a comfortable time to explore, whether you’re staying in the city or heading out on day trips.

The crowds begin to ease, but Reykjavík remains lively, with cultural events, outdoor experiences, and seasonal highlights. For those looking to experience Iceland’s capital without the summer rush, September offers a well-balanced moment to visit.

What’s Reykjavík Like in September?

In September, Reykjavík feels calmer than peak summer, but not quiet. The city still feels active, with festivals and events taking place throughout the month.

Weather conditions can change quickly. You might see sun, wind, and light rain in a single day. It’s part of the experience of traveling in Iceland in September, and it encourages a more flexible pace. Daylight hours are shorter than in summer, but still long enough to explore comfortably. Evenings begin to darken, which brings back the chance to see the Northern Lights in September.

Since September falls within the shoulder season, crowds are noticeably smaller. Popular Reykjavík attractions, restaurants, and tours are easier to access. And prices tend to ease slightly after the peak Icelandic summer months.

There’s also a shift in scenery. While Iceland doesn’t have dramatic fall foliage, subtle autumn colors appear in parks, lava fields, and nearby nature areas. The light becomes softer, and the city takes on a more atmospheric feel.

Weather and Daylight in Reykjavík in September

September marks the transition from summer to fall in Reykjavík, Iceland. Conditions can shift quickly, with a mix of sun, wind, and rain. But it’s still a good time for outdoor activities and day trips.

Here’s what to expect in September in Reykjavík:

• Average temperature: 5–11°C (41–52°F)
• Wind: Frequent, especially near the coast
• Rain: Light and intermittent, with occasional showers
• Hours of daylight: Around 13–14 hours early in the month, decreasing to 11–12 hours
• Sunrise: Around 06:10 in early September, later toward 07:00
• Sunset: Around 20:40 in early September, later toward 18:50

As the season shifts, Iceland can also experience haustlægð, or autumn depressions. These are low-pressure systems that can bring stronger winds and heavier rain, especially later in September. It’s a good idea to stay flexible with your plans and keep an eye on local weather updates.

Unlike the Icelandic midnight sun of summer, September brings darker nights. This makes it possible to see the Northern Lights in Iceland again, especially toward the end of the month. To stay comfortable, wear layers and bring a waterproof jacket to handle changing conditions.

11 Best Things to Do in Reykjavík in September

September offers a mix of seasonal activities, cultural events, and outdoor experiences. It’s a good time to explore both the city and the nearby natural landscapes.

1. Chase the Northern Lights from Reykjavík

As darker nights return, your chances of seeing the Northern Lights in Iceland begin to improve. Early in September can still be relatively bright, but visibility gets better as daylight hours gradually decrease.

On clear nights, it’s sometimes possible to see the Northern Lights in Reykjavík. However, heading just outside the city, away from light pollution, can significantly improve visibility.

Prefer to stay in the capital? Some hotels in Reykjavík, such as Center Hotels Skjaldbreið, offer Northern Lights wake-up calls. This way, you won’t miss a sighting if it appears late at night.

Temperatures are still relatively mild compared to winter in Reykjavík, which makes September a more comfortable time for aurora viewing. Even so, warm layers are essential, especially when spending time outdoors at night.

Pro tip: Many Northern Lights tours in Iceland offer a free retry if there are no sightings. It’s a good idea to book your tour early in your trip so you have more chances to try again.

2. Go whale watching without the summer crowds

September is still a good month for whale watching in Reykjavík. The peak summer crowds have eased, but marine life remains active, with frequent sightings of humpback whales, dolphins, and seabirds.

To make the most of your time, you can combine whale watching with a Northern Lights boat tour in the evening. This gives you the chance to experience both in a single trip.

3. Join a sheep round-up tour from Hafnarfjörður

Réttir is another seasonal highlight in Iceland in September. This traditional event marks the annual sheep round-up, when farmers gather and sort sheep from the highlands.

Several horseback riding tours from Hafnarfjörður offer a chance to witness this local tradition up close. It’s a unique way to experience Icelandic culture beyond the usual sights.

Back in the city, you can continue the experience by trying Icelandic lamb dishes like kjötsúpa (lamb soup). Many local restaurants in Reykjavík, such as Jörgensen Kitchen & Bar and Grandi Restaurant & Bar, offer lamb dishes year-round. It’s also a good time to shop at Laugavegur Street for a lopapeysa, the traditional Icelandic wool sweater.

4. Forage for wild berries in Heiðmörk Nature Reserve

September is berry season in Iceland. In Reykjavík, Heiðmörk Nature Reserve is a popular spot for berry picking (berjamó). It’s located just outside the city and is easy to access by car or public transport. You’ll find berries like crowberries, blueberries, and bilberries growing naturally in moss-covered lava fields.

You can try these berries in different forms, from fresh juices and jams to cakes and desserts. They’re often paired with skyr, Iceland’s traditional dairy product, and can be found in local cafés and bakeries across Reykjavík.

5. Take autumn strolls through Reykjavík’s  city parks

Reykjavík’s nature spots take on subtle autumn tones in September. Areas like Hallargarðurinn, Elliðaárdalur Valley, and Klambratún are ideal for walking and offer a quiet break within the capital.

For something more active, explore the trails at Öskjuhlíð Hill. It’s one of the few forested areas in Reykjavík, with birch and pine trees turning shades of gold in September. The hill also offers panoramic views of the city, which is especially beautiful at sunrise or sunset.

6. Capture Reykjavík’s soft pink and golden light

Speaking of sunrises and sunsets, September brings a noticeable shift in light across Reykjavík. Mornings are often bright and clear, which is great for early walks along the harbor or through nearby parks.

By evening, the light softens as the sun sits lower on the horizon. Sunsets often bring hues of pink and purple, with touches of warm gold when clouds reflect the fading light. Popular spots like Perlan observation deck, Tjörnin Pond, Sun Voyager sculpture, and Harpa Concert Hall offer great viewpoints.

For unobstructed views next to the harbor, Center Hotels Arnarhvoll features SKÝ rooftop bar on its top floor.

7. Experience Reykjavík’s film festivals

If you’re in town in late September, check out the Reykjavík International Film Festival (RIFF), the largest in Iceland. It runs for about 11 days and features independent films, international releases, and documentaries, along with talks and special screenings. You can catch films at venues like Háskólabíó and the Nordic House. Or even in more unusual settings, such as ice or lava caves, or the historic Sundhöllin geothermal pool.

Earlier in the month, you can also check out the Icelandic Queer Film Festival at Bíó Paradís. This smaller, multi-day event focuses on LGBTQ+ stories and offers a more intimate viewing experience.

Tickets are usually easy to book online. It’s a great way to spend an evening, especially if the weather turns cooler.

8. Enjoy Reykjavík’s music and cultural festivals

If you love discovering local music and culture, September is a great time to be in Reykjavík. Several festivals take place throughout the month, offering a mix of traditional and contemporary sounds.

Depending on your travel dates, you may be able to catch one or more of these events:

• University of Iceland Októberfest: A lively 3-day event in early September with food, music, and a social atmosphere.
• Extreme Chill Festival (Undir Jökli): Also in early September, it’s a music festival known for ambient and experimental music, often held in intimate venues
• Vaka Folk Festival: Around mid-September, it focuses on traditional Icelandic and Nordic music, dance, art, and crafts.

These festivals are a great way to experience Reykjavík beyond its main attractions.

9. Warm up in Reykjavík’s geothermal pools

Reykjavík’s public swimming pools are open year-round and are an important part of local life. As temperatures drop in September, they become even more inviting.

You can relax in naturally heated water while the cool air surrounds you. Many pools, like Laugardalslaug and Vesturbæjarlaug, also have hot tubs and steam baths for after-tour relaxation.

Prefer a more private setting? Places like Ísafold Spa at Þingholt by Center Hotels offer a quieter and more luxurious alternative in the city center.

Bonus: Book day trips from Reykjavík in September

September is a great time to explore beyond the city. Road conditions are still generally good, and with fewer tourists around, it’s easier to drive the Ring Road.

Popular day trips from Reykjavík include:

• Golden Circle: Home to famous sights like geysers, waterfalls, and the Þingvellir National Park
• South Coast: Known for black sand beaches, glaciers, and dramatic waterfalls
• Reykjanes Peninsula: A quieter option with volcanic landscapes, geothermal areas, and coastal views closer to Reykjavík

Friendly reminder: Be sure to check the weather and road conditions ahead of time, as they can change quickly in September.

Plan Your Perfect Autumn Escape in Reykjavík

Reykjavík in September offers a balanced travel experience. You still have access to outdoor adventures, but with fewer crowds and a more relaxed atmosphere. The city feels different compared to the summer months. Days are shorter, the light is softer, and evenings bring seasonal highlights like the Northern Lights.

Whether you’re visiting for the Northern Lights, festivals, or a quieter atmosphere, September is a rewarding time to be here.

FAQs

Is September a good month to go to Reykjavík?

Yes, September is a good time to visit Reykjavík. You get fewer crowds, cooler weather, and the chance to see the Northern Lights while still enjoying outdoor activities.

Can you see the Northern Lights from Reykjavík in September?

Yes, you can see the Northern Lights from Reykjavík in September, especially later in the month when nights are darker. Heading to remote areas with clear skies and little to no light pollution improves your chances.

Can you still see puffins in Iceland in September?

No, puffins usually leave Iceland by mid- to late August. Sightings are possible but rare in early September, especially around Reykjavík.

Is it better to visit Reykjavík in September or October?

Both months are great if you want fewer crowds. September has milder weather and more daylight, while October in Reykjavík offers darker nights and significantly better Northern Lights visibility.

What to wear in Iceland in September?

Dress in layers to adapt to the changing weather in Iceland in September. A waterproof jacket, warm mid-layers, and sturdy shoes are essential for both city walks and outdoor activities.

Is there snow in Reykjavík, Iceland, in September?

No, snow is rare in Reykjavík during September. You’re more likely to experience rain and wind, though nearby highlands may see early snowfall.

Where to stay in Reykjavík, Iceland, in September?

Staying in central Reykjavík gives you easy access to attractions, restaurants, and tour departures. For groups or longer stays, Þingholt Apartments by Center Hotels offer a more spacious and home-like accommodation. If you prefer to stay right in the heart of Reykjavík, Center Hotels Plaza is a convenient and comfortable option.