Best Things To Do in Jeju-si in Summer

Planning a summer getaway to Jeju-si in 2025? You’re in for a treat! Jeju-si, the vibrant capital of Jeju Island, offers a unique blend of natural beauty, cultural experiences, and exciting activities perfect for the summer months. Imagine exploring pristine beaches, hiking scenic trails, and immersing yourself in the island’s rich heritage. This comprehensive guide highlights the best things to do in Jeju-si in summer, ensuring an unforgettable trip. Discover a plethora of experiences and find the Things to do in Jeju-si that are perfect for you, or uncover the absolute Best Things to Do in Jeju-si. For those looking for recommendations, explore the Top 10 Things to Do in Jeju-si. Looking for a romantic escape or traveling on a budget? Jeju-si caters to all, with numerous Romantic Things to Do in Jeju-si and Budget-Friendly Things to Do in Jeju-si. And for those with a flexible schedule, don’t miss out on Things to Do in Jeju-si This Weekend. Discover Things to Do in Jeju-si at Night and explore seasonal activities. Even if summer isn’t your thing, you can still enjoy Jeju-si with Things to Do in Jeju-si in Winter, Things to Do in Jeju-si in Fall or Things to Do in Jeju-si in Spring.

1. Hamdeok Beach – Relax on White Sands

What is it? Hamdeok Beach is one of Jeju Island’s most beloved beaches, known for its stunning white sands and shallow, emerald-green waters. It’s an ideal spot for families and anyone looking to relax and enjoy the beautiful coastal scenery. The beach is well-maintained, providing a safe and clean environment for visitors. Because of its popularity, it offers various amenities and activities, making it a perfect destination for a summer getaway. For more information, you can find things to do in Jeju-si on our website.

Why go? Hamdeok Beach offers a delightful escape from the hustle and bustle of city life. The calm, clear waters are perfect for swimming and paddling, making it especially appealing for families with young children. In addition, you can enjoy various water sports, such as kayaking and windsurfing. Its picturesque setting makes it a fantastic spot for photography. If you are looking for the Best Things to Do in Jeju-si, Hamdeok Beach should definitely be on your list.

Don’t miss: Be sure to take a leisurely stroll along the shoreline and soak in the breathtaking views. Don’t miss the opportunity to try some local snacks from the nearby vendors, offering a taste of Jeju’s culinary delights.

Insider tip: Visit during the weekdays to avoid the larger weekend crowds for a more peaceful experience.

This is definitely one of the Top 10 Things to Do in Jeju-si.

2. Aqua Planet Jeju – Explore Marine Life

What is it? Aqua Planet Jeju is one of the largest aquariums in South Korea, showcasing an impressive array of marine life from around the world. It features diverse habitats, interactive exhibits, and captivating shows. As one of the top Things to do in Jeju-si, it offers an immersive experience for visitors of all ages.

Why go? Visiting Aqua Planet Jeju provides a unique opportunity to encounter thousands of marine species, including sharks, rays, penguins, and seals. The main tank, one of the largest in the world, offers breathtaking views of a vibrant underwater ecosystem. The aquarium also hosts educational programs and entertaining performances that highlight the importance of marine conservation. Therefore, a trip here is both fun and informative. Don’t miss the chance to explore one of the Best Things to Do in Jeju-si.

Don’t miss: Be sure to catch the Ocean Arena performance, a spectacular show featuring marine animals and skilled trainers. Additionally, explore the Aqua Dome to witness the mesmerizing jellyfish exhibit.

Travel Tip: Plan your visit during off-peak hours to avoid crowds and fully enjoy the exhibits.

As a result, you’ll have a more relaxed and engaging experience. Moreover, remember to check out the penguin habitat! Experiencing the underwater tunnel is also a must. This is one of the Top 10 Things to Do in Jeju-si.

3. Hallasan National Park – Hike to the Summit

What is it? Hallasan National Park, home to South Korea’s highest peak, Mount Hallasan, is a UNESCO Biosphere Reserve. The park features diverse ecosystems, stunning volcanic landscapes, and numerous hiking trails catering to various skill levels. It’s a haven for nature enthusiasts and those seeking breathtaking panoramic views. Moreover, Hallasan stands as one of the iconic landmarks representing Things to do in Jeju-si.

Why go? Hiking to the summit of Mount Hallasan is an unforgettable experience, especially during summer when the trails are lush and green. The park offers a chance to witness unique flora and fauna, including the Korean azalea in full bloom. Furthermore, the sense of accomplishment and the incredible views from the top make it worthwhile. For those seeking less strenuous activities, shorter nature trails around the base provide equally rewarding experiences. It’s also a great way to explore the Best Things to Do in Jeju-si.

Don’t miss: Make sure to check the weather conditions before you go, as the summit can often be shrouded in mist. The Seongpanak Trail is the longest but also the gentlest ascent, while the Gwaneumsa Trail offers more challenging terrain with rewarding views. Remember to bring plenty of water and snacks, and wear appropriate hiking gear. Consider visiting the Hallasan Mountain Museum near the park entrance for an insightful introduction to the area’s geology and ecology.

4. Seongsan Ilchulbong (Sunrise Peak) – Witness a Stunning Sunrise

What is it? Seongsan Ilchulbong, also known as Sunrise Peak, is an iconic tuff cone crater rising dramatically from the sea. Formed by hydrovolcanic eruptions about 5,000 years ago, this UNESCO World Heritage site offers breathtaking panoramic views, particularly at sunrise. It’s a relatively easy climb to the top, making it accessible for most visitors. Furthermore, its unique geological formation and coastal scenery make it a must-see attraction in Jeju-si. To learn more about Top 10 Things to Do in Jeju-si, visit our website.

Why go? The primary reason to visit Seongsan Ilchulbong is, of course, to witness a spectacular sunrise. Additionally, the sweeping views of the surrounding coastline and the crater itself are incredibly rewarding. The area is also rich in flora and fauna, making it a great spot for nature lovers. Moreover, several walking trails around the base provide alternative perspectives. Considering Things to Do in Jeju-si This Weekend? This is a great choice!

Don’t miss: Arrive early to secure a good viewing spot for the sunrise, as it can get crowded, especially during peak season. The Haenyeo (women divers) performances at the base of the peak are also worth watching. These skilled divers collect seafood without any breathing apparatus.

Insider tip: Check the weather forecast before you go; a clear day will maximize your chances of seeing a stunning sunrise.

Afterwards, explore the nearby Seopjikoji coast for more scenic views.

5. Manjanggul Lava Tube – Explore Underground Caves

What is it? Manjanggul Lava Tube is one of the world’s longest lava tunnels, a UNESCO World Heritage site offering a unique subterranean experience. Formed thousands of years ago by flowing lava, this cave system stretches over several kilometers, featuring impressive stalactites, stalagmites, and lava formations. It’s an ideal escape from the summer heat, maintaining a cool, constant temperature year-round. Exploring Manjanggul provides a glimpse into the island’s volcanic origins, making it a must-see for nature enthusiasts and adventure seekers.

Why go? Visiting Manjanggul Lava Tube is an unforgettable experience, especially if you’re looking for things to do in Jeju-si that are both educational and awe-inspiring. As you walk through the dimly lit passages, you’ll marvel at the incredible geological formations shaped by nature over millennia. This is a fantastic way to escape the summer heat and discover a hidden world beneath Jeju Island. Furthermore, its status as a UNESCO site adds to its allure, emphasizing its global significance and preservation.

Don’t miss: While exploring, be sure to look out for the lava stalactites and stalagmites, some of the largest in the world. Also, don’t miss the lava column, a massive structure formed when lava solidified as it dripped from the ceiling. Remember to wear comfortable shoes, as the cave floor can be uneven. For more inspiration on the Best Things to Do in Jeju-si, check out our guide.

Insider tip: Bring a light jacket, as the cave temperature remains consistently cool, even in summer.

6. Jeju Folk Village – Step Back in Time

What is it? The Jeju Folk Village offers a fascinating glimpse into the island’s traditional past. It’s a living museum showcasing houses, tools, and artifacts that represent Jeju’s unique culture. For those interested in the history of Things to do in Jeju-si, this is a must-see. Explore traditional homes, learn about local crafts, and witness cultural performances that bring Jeju’s heritage to life.

Why go? Visiting the Jeju Folk Village provides an immersive experience into the island’s rich heritage. Moreover, it’s an excellent opportunity to learn about the daily lives of Jeju islanders in the past. The village features meticulously recreated homes, complete with furnishings and tools, offering a tangible connection to history. In addition to the historical aspects, various cultural performances and demonstrations take place, showcasing traditional music, dance, and crafts. To plan your trip better, see Top 10 Things to Do in Jeju-si.

Don’t miss: Don’t miss the chance to witness traditional craft demonstrations. See artisans at work, creating pottery, weaving fabric, and crafting other traditional items. You can even participate in some hands-on activities. Finally, be sure to catch the cultural performances, which include music, dance, and theatrical presentations that showcase Jeju’s cultural identity.

Insider tip: Check the performance schedule upon arrival to plan your visit around these captivating shows.

7. Iho Tewoo Beach – Enjoy Sunset Views

What is it? Iho Tewoo Beach is a charming coastal spot near Jeju-si, famous for its distinctive horse-shaped lighthouses. With its soft sands and shallow waters, it’s a favorite among locals and tourists alike. This beach is particularly well-known for offering stunning sunset views, making it an ideal location for an evening stroll or a romantic getaway. Moreover, the unique lighthouses provide excellent photo opportunities.

Why go? Visiting Iho Tewoo Beach is one of the best Things to do in Jeju-si, especially during the summer. The calm waters are perfect for swimming and paddling, while the beach itself is great for sunbathing and relaxing. As the sun begins to set, the sky transforms into a canvas of vibrant colors, offering a mesmerizing view that you won’t want to miss. Therefore, it’s a fantastic spot to unwind and enjoy the natural beauty of Jeju Island. Furthermore, the beach is easily accessible and provides a serene escape from the bustling city.

Don’t miss: Make sure to stay until the sun dips below the horizon for the full sunset experience. The horse-shaped lighthouses illuminated against the twilight sky create a picturesque scene.

Insider tip: Arrive early to secure a good spot on the beach and perhaps enjoy a picnic as you wait for the sunset.

Remember to bring your camera to capture the unforgettable views. It’s definitely one of the top 10 things to do in Jeju-si if you’re looking for a memorable experience. This location truly shines as one of the Best Things to Do in Jeju-si.

8. Dongmun Market – Taste Local Cuisine

What is it? Dongmun Market is one of Jeju’s oldest and largest traditional markets, offering a vibrant glimpse into local life and cuisine. It’s a bustling hub where you can find everything from fresh seafood and local produce to street food and souvenirs. As one of the best Things to do in Jeju-si, the market provides an authentic cultural experience.

Why go? For an immersive culinary adventure! Dongmun Market is the perfect place to sample Jeju’s unique flavors. You can try local specialties like black pork skewers, fresh seafood pancakes, and *hallabong* juice (a type of citrus fruit grown on Jeju Island). Moreover, it’s a great spot to observe the local way of life and interact with friendly vendors. Many consider this one of the Top 10 Things to Do in Jeju-si. Additionally, the lively atmosphere, coupled with the diverse food offerings, makes it a must-visit for food lovers.

Don’t miss: Be sure to try the *dak-galbi* (spicy stir-fried chicken) and the *bindaetteok* (mung bean pancake). Also, look out for seasonal fruits and vegetables unique to Jeju Island.

Insider tip: Visit during lunchtime for the freshest options and the most vibrant atmosphere. Plus, don’t be afraid to haggle a little for a better price!

9. Jeju National Museum – Discover Island History

What is it? The Jeju National Museum offers a fascinating look into the island’s rich history and cultural heritage. Featuring a diverse collection of artifacts, from prehistoric relics to Joseon Dynasty treasures, the museum provides a comprehensive overview of Jeju’s unique identity. Moreover, the exhibits are thoughtfully curated to present the island’s story in an engaging and accessible manner.

Why go? Visiting the Jeju National Museum is a wonderful way to gain a deeper understanding of the island’s past. For example, you can explore exhibits on Jeju’s traditional lifestyle, its volcanic origins, and its role in Korean history. Furthermore, the museum often hosts special exhibitions and educational programs, making each visit a unique experience. It’s also a great option for Budget-Friendly Things to Do in Jeju-si.

Don’t miss: Don’t miss the exhibits on Jeju’s shamanistic traditions and the island’s unique dolmens. Be sure to check out the outdoor display of traditional Jeju houses, providing a glimpse into the island’s architectural heritage.

Travel Tip: Allocate at least two to three hours to fully explore the museum’s collections.

In addition to the main exhibits, the museum also features a beautiful garden, perfect for a peaceful stroll after your visit. This is just one of the many Things to do in Jeju-si.

10. Mysterious Road – Experience an Optical Illusion

What is it? The Mysterious Road, also known as Dokkaebi Road, is a fascinating spot in Jeju-si where an optical illusion makes it appear as though vehicles are rolling uphill. In reality, the road slopes slightly downward, but the surrounding landscape tricks the eye. This unusual phenomenon has made it a popular tourist attraction, drawing curious visitors eager to witness and experience the perplexing effect.

Why go? It offers a unique and entertaining experience that defies common sense. It’s a great spot for families and those seeking unusual attractions. It is free to visit and provides a fun photo opportunity. Besides experiencing the illusion, the surrounding area offers scenic views of the Jeju landscape, adding to the overall appeal. Also, given that Jeju-si is known for unique attractions, this should be on your Top 10 Things to Do in Jeju-si list!

Don’t miss: Try the water bottle test. Pour water on the road and watch it seemingly flow uphill. Bring a camera to capture the bewildered expressions of your companions as they witness the illusion.

Insider tip: Visit during off-peak hours to avoid crowds and fully enjoy the experience without the distraction of numerous vehicles.

Moreover, be sure to check out other things to do in Jeju-si to maximize your visit!

Exploring Jeju-si in the summer of 2025 offers a diverse range of activities, from tranquil beaches and lush gardens to vibrant cultural experiences and adventurous outdoor excursions. Whether you’re seeking relaxation, exploration, or a bit of both, Jeju-si has something to captivate every traveler. Start planning your unforgettable summer adventure in Jeju-si today!