Visiting Jeju in Summer

Let’s be honest about Jeju in summer – it’s seriously hot and humid, and it’s super busy with domestic tourists. It can also often rain – heavily – and leave a mist that makes everything feel extra damp. But, the beaches are at their best when it’s hot out – as are the water sports. Visiting Jeju in summer buzzes with the energy of a busy Korean holiday season.

While summer on Jeju isn’t the easiest time to visit given the climate and number of tourists, if you plan smart and know which experiences to prioritise, you can have an amazing visit.

What Summer on Jeju Is Like

Summer on Jeju Island runs from June through August, with July and August the hottest and busiest months. You can expect temperatures of between 22–30°C during the day, with high humidity that makes it feel warmer than it is. July and August are peak tourist season, with many Korean families flooding the island from the mainland during school holidays. The beaches are packed, accommodation prices are at their highest, rental cars can sell out, and popular attractions have long queues.

June is also the monsoon month (jangma). And with that comes heavy rain and intense humidity. While the rain doesn’t last all day (think heavy downpours and then sunshine), you may have some days where it sticks around and your outdoor plans will need to be flexible. July and August are typically brighter, but you can still get plenty of afternoon thunderstorms. While September is technically early autumn on Jeju, it’s still warm enough for beaches and a much calmer time to visit. But be warned – the typhoon season runs through August into September so keep an eye on the weather.

So should you visit Jeju in summer? It depends on what you’re planning. If hiking and trail walking are your priority, summer is definitely not the time to visit. Hot, humid conditions make hiking outdoors incredibly unpleasant, and the official Olle Trail guided walks are suspended during July and August for exactly this reason. But if you love beaches, water activities, and a lively holiday atmosphere, then summer on Jeju might just be for you!

The Best Beaches for Summer

Jeju’s beaches are the star of summer, and the island has plenty of beaches to suit any type of visitor.

• Hyeopjae Beach (west coast) is widely considered one of Jeju’s finest (and our personal favourite). You get vivid turquoise water, white sand, and views of Biyangdo Island offshore. The water is shallow and calm, so it’s perfect for families with young kids. It’s without a doubt one of Korea’s most beautiful beaches. It gets busy on summer weekends and weekdays – make sure you arrive before 10am. Parking is available, but fills up fast.
• Hamdeok Beach (north coast) is another go-to family beach. You’ll also find shallow, crystal-clear water, well-developed facilities, and easy bus access from Jeju City. There are multiple cafés on the beachfront (including Baskin Robbins for an ice cream to cool you down on a hot day). The lifeguards are active during summer and will blow their whistles firmly if you go out knee-deep – which is rather frustrating. But it’s standard practice at Korean beaches – so don’t take it as a personal attack on your swimming ability! Lifeguards stop patrolling beaches around September – which makes for a much calmer (and less noisy) beach holiday.
• Jungmun Beach (south coast) is Jeju’s surf beach. Here, there are stronger waves and slightly more atmosphere. It’s more popular with young adults as the water gets deep fast – so it can be a bit dicey for kids. You’ll find water sports operators based here. It’s located adjacent to the Jungmun Tourist Complex, so you can also fit in a visit to the Teddy Bear Museum or Alive Museum if the weather is a little mixed.
• Gwakji Beach (northwest, near Hallim) is one of Jeju’s best-kept secrets for a quieter summer beach day. The strip of beach is long (reminding us more of a beach on the Gold Coast in Australia than South Korea). There’s less development here and fewer crowds, but there are still a few cafes and restaurants to choose from, along with a convenience store. Some areas of the sea can be a little rough, but there’s a little bay area that’s a good spot for kids.
• Iho Tewoo Beach near Jeju City is the most convenient beach if you’re staying in Jeju City. It’s just a short taxi or bus ride away. Not the island’s most spectacular, but perfectly good for an evening swim and famous for the two horse-shaped lighthouses that have become one of Jeju’s most photographed landmarks.
• Woljeongri Beach (northeast) has become one of Jeju’s trendiest beach destinations, with a row of stylish cafés that line the beachfront. It’s the perfect spot for a coffee with a turquoise sea view. The shallow, calm water makes it popular with paddleboards and kayaks.

Summer Water Activities

Summer is when the sea temperature reaches its warmest (24–27°C in August) and there are plenty of water activities to choose form if you enjoy getting out on the water.

• Snorkelling and scuba diving: Jeju Island boasts some incredible scuba diving spots, especially along the east coast near Seongsan Ilchulbong. The clarity of the water and the diversity of marine life make it excellent – whether you’re a beginner or an experienced diver. Several dive operators in Seongsan and Seogwipo offer guided experiences.
• Kayaking and paddleboarding: Woljeongri Beach and the Hado Sea area near Udo Island are great for kayaking in calm conditions. Clear-bottom kayaks have become popular for the views they offer of the sea floor. The Hado area also offers kayak fishing if you’re after a more active experience.
• Jet boating and banana boats: The southern coast near Jungmun Tourist Complex is the hub for jet boating, with gorgeous views of Jusangjeolli Cliff from the water. Jet boating is one of Jeju’s most popular summer water sports – so make sure you book in advance during summer.
• Submarine tour: The Seogwipo Submarine descends up to 40 metres below the surface for views of Jeju’s vibrant marine life and coral reefs through panoramic windows. This is a great option for kids (or if you just want to experience the ocean without getting wet!). Book ahead in summer.
• Dolphin watching: Hamo Beach in the south is known as a dolphin-watching destination. There are boat tours operating here, with local experts guiding your experience. Jeju is home to a population of Indo-Pacific bottlenose dolphins that are regularly spotted close to shore. If you go for a drive along the coast on a clear day you’re likely to spot some!
• Yacht tours: Several operators offer yacht and sailing experiences around the island’s southern coast. The Shangri-La Yacht offers a 60-minute relaxed tour with snacks and drinks included.

Beating the Heat and Crowds

When visiting Jeju in summer our number one top is to start early for all your activities and destination visits. Popular beaches fill up from mid-morning on weekends. At 8am you’ll have Hamdeok nearly to yourself; by 11am it’s packed. The same applies to visiting Jeju attractions. Korean tourists don’t usually start their days early – if you go at 8–9am you’ll beat the crowds.

Here are some of other top tips if you plan to visit Jeju in summer to make the most of your visit.

• Retreat inland in the heat of the day. The coolest places on Jeju in summer are the mid-mountain forests – Saryeoni Forest, Jeolmul Recreation Forest, and Gotjawal-area trails offer plenty of shade and temperatures several degrees lower than coastal areas. If you want to spend time outdoors, plan for early morning and late afternoon; use the 11am–3pm window for indoor attractions, cool cafés, or the forests.
• Caves are perfect summer destinations. Manjanggul Cave maintains a constant 11–12°C year-round – meaning it’s a great place to visit to escape the heat! Pair a cave visit with nearby Bijarim Forest for a perfectly shaded morning.
• Indoor options for rainy or very hot days: Aqua Planet Jeju (one of Asia’s largest aquariums), the Jungmun museum cluster (Teddy Bear Museum, Alive Museum), Jeju Stone Park, and Jeju Folk Village Museum are all excellent and air-conditioned.
• Lavender: Jeju’s lavender season peaks in June to August – the lavender farms near Sangumburi Crater are beautiful. They’re not a classic Jeju attraction, but they are alovely quiet option to add to your itinerary if you’re visiting in early summer.
• Hydrangeas: Jeju’s hydrangeas bloom in June and July, particularly along roadsides and near coastal areas. The blue and purple blooms against volcanic rock walls are distinctly Jeju and well worth seeking out.

Typhoon Season – What You Need to Know

Typhoon season runs from around July through to September, with August the most active month. Direct hits on Jeju are pretty rare, maybe one or two significant storms per decade, but the island’s position means it regularly experiences the outer edges of typhoons passing through the Korean Strait.

That means you can expect some heavy rain, strong winds (Jeju is already known as the Island of Wind under normal conditions), rough seas, potential closure of ferry services to Udo, Gapa Island, and Chuja Island, and possible trail closures on Hallasan. Most attractions and accommodations operate normally through all but the most severe storms.

Practical typhoon advice:

• Check the Korea Meteorological Administration for typhoon tracking during your visit
• If a typhoon is approaching, prioritise indoor plans and stock up on food and water
• Ferry services to offshore islands are the first things to be cancelled – if Udo or Gapa is on your itinerary, build a backup day into your plans
• Hallasan summit trails close when wind exceeds a certain threshold – check before you go

Eating and Drinking in Summer

Our number one pick for eating during summer to keep you cool is to try Bingsu (shaved ice with sweet toppings). This is Korea’s essential summer dessert, and on Jeju you can experience local ingredients like hallabong tangerine, green tea from Osulloc, and black sesame.

Here are some other options for eating and drinking on Jeju in summer:

• Seogwipo Maeil Olle Market is busier and more vibrant in summer, with expanded street food options. Go early in the morning when it’s cooler.
• Fresh seafood is excellent year-round, but summer’s warmer waters bring out ceviche-style raw dishes and cold seafood noodles (mul-hoe naengmyeon) that are ideally suited to the heat. Try it in Seogwipo or at the Dongmun Market.
• There are plenty of ocean-view cafés on Jeju that are a great spot to escape the summer heat and take in the stunning ocean views. Look for spots along the Seogwipo coastal road, near Woljeongri Beach, and around Seopjikoji Cape for the best sea views.

Practical Summer Tips

If you’re planning a visit to Jeju in summer, here are our top tips to maximise your trip:

• Book everything ahead. Accommodation, rental cars, and popular water activities all book out weeks in advance during peak summer (mid-July to late August). Plan and book 4–6 weeks in advance.
• Budget higher for peak season. Hotel and flight prices in July and August are much higher than the rest of the year. Visiting in June (before Korean school holidays) or September (still beach-warm) will give you more value.
• Sun protection is essential. Jeju’s summer sun is intense. Sunscreen (SPF 50 minimum), a wide-brimmed hat, and a UV-protection layer for your kids are a must when you’re visiting the beach or spending time in the sun.
• T-Money card. Pick one up at any convenience store when you arrive – it makes bus travel simple and means you don’t need to handle cash for every bus journey.
• Navigation. Download Kakao Maps or Naver Maps before your trip – Google Maps has limited functionality in South Korea.

Is Visiting Jeju in Summer Worth It?

Yes, visiting Jeju in summer is worth it, if you know what to expect and make plans around the heat and the crowds.

The beaches are genuinely stunning in summer (well all year really!), the water activities are great fun, and the atmosphere of summer Jeju has its own energy that other seasons can’t match. Just be sure to book early, and treat the morning hours as your golden window for exploring outdoors.

Next in our Jeju Seasons series: Jeju in Autumn | Jeju in Spring | Jeju in Winter