5 Cool Forest Trails in Jeju to Escape the Summer Heat
Summer in Jeju City can get brutally hot. Every time I drive up from downtown toward the jungsangan — Jeju's inland belt between the coast and Hallasan — I actually watch the number on my dashboard thermometer drop a few degrees.
The closer I get to a shaded forest trail, the more the air itself seems to change.
When the heat hits in summer, I actually head for the mountains more often than the beach. Today I'm sharing five mid-mountain forest trails I turn to again and again during those months — all noticeably cooler than downtown or the coast, thanks to dense tree cover.
Even in peak summer, these five places stay fairly comfortable to walk through.
| Place | What Makes It Special |
|---|---|
| Jeolmul Natural Recreation Forest | Shaded boardwalk + cold spring footbath |
| Saryeoni Forest Trail | Dense forest + long dirt trail |
| Gyorae Natural Recreation Forest | Short walk or full oreum hike, your choice |
| Banongoreum Hinoki Cypress Forest | Hinoki cypress shade + loop trail |
| Gwaneumsa Trail | Forest path + a hidden wind cave on an official route |
1. Jeolmul Natural Recreation Forest — Jangsaeng-i Trail & Neonadeuri-gil
Jeolmul Natural Recreation Forest actually has two very different options. If you want a real trekking route, go for Jangsaeng-i Trail. If you just want to enjoy the shade without much effort, Neonadeuri-gil is the one.
Right at the entrance of Neonadeuri-gil, a straight boardwalk stretches out through a Japanese cedar forest — the trees are so dense that it never felt too hot, even in peak summer. The way the shadows fall across the boardwalk makes for a pretty striking scene, too.
| 📍 Address | 584 Myeongnim-ro, Jeju City, Jeju Island |
|---|---|
| 🕖 Opening Hours | Summer (Mar–Oct) 07:00–18:00 / Winter (Nov–Feb) 07:00–17:00 |
| 💰 Admission (per person) | Adults ₩1,000 · Teens ₩600 · Children ₩300 |
| 🚗 Parking Fee | Compact/eco-friendly ₩1,500 · Mid-size ₩3,000 · Large ₩5,000 |
| 🥾 Jangsaeng-i Trail | Course A 11.1km (about 3 hrs) · Course B 7.2km |
| 🚶 Neonadeuri-gil | 3km · about 1 hr 30 min · fully boardwalk · plenty of shade |
2. Saryeoni Forest Trail
The section toward the Bijarim-ro side is where I find Saryeoni Forest Trail especially peaceful. Wide dirt paths, dense forest, and trees tall enough to block out the sky create some genuinely cool shade.
Compared to the area near the Namjoro entrance, this section gets far fewer visitors, so it feels quieter and more relaxed. Walking here while listening to the wind through the trees and the birds, I completely lost track of time.
| 📍 Bijarim-ro Entrance | Bonggae-dong, Jeju City (visitor center along Bijarim-ro) |
|---|---|
| 📍 Namjoro Entrance | Gasi-ri, Pyoseon-myeon, Seogwipo City (Bulgeun Oreum entrance) |
| 📏 Total Distance | About 10km |
| 🕖 Closing Time | 17:00 (no entry after this time) |
| 💰 Admission | Free |
| 🚗 Parking | Free at Namjoro entrance / Free public lot at Bijarim-ro (about a 2.5km walk to the actual entrance) |
3. Gyorae Natural Recreation Forest
Gyorae Natural Recreation Forest offers two very different options: a short ecological observation trail, or a longer trail that climbs all the way to the summit of Keun Jigeurioreum — one of Jeju's many oreum, or volcanic hills. Being able to choose based on how much time or energy I had that day was genuinely useful.
| Course | Distance | Duration | Difficulty |
|---|---|---|---|
| Ecological Observation Trail | 1.5km | 40 min round trip | 🟢 Easy |
| Oreum Trail (to Keun Jigeurioreum Summit) | About 3.5km | 2 hr 30 min round trip | 🟠 Moderate |
| 📍 Address | Gyorae-ri, Jocheon-eup, Jeju City, Jeju Island |
|---|---|
| 🕖 Ecological Trail Hours | Summer (Mar–Oct) 09:00–17:00 Winter (Nov–Feb) 09:00–16:00 |
| 🕖 Oreum Trail Hours | Summer (Mar–Oct) 09:00–16:00 Winter (Nov–Feb) 09:00–15:00 |
| 💰 Admission | Adult ₩1,000 · Teen/Military ₩600 · Under 12 & 65+ free |
| 🚗 Parking | Free · spacious lot at the entrance |
📖 Related Post
Gyorae Natural Recreation Forest & Keun Jigeurioreum: A Hidden Summer Hike in Jeju [Oreum #002]4. Banongoreum Hinoki Cypress Forest
Banongoreum really breaks down into two parts: the summit trail and the loop trail. I wouldn't recommend the summit trail in summer — it's a tough climb, and part of it has no shade at all.
The loop trail, on the other hand — locally called dulle-gil, meaning roughly "circumference trail" — runs through Japanese cedar and Hinoki cypress, so there's plenty of shade and it's a much easier walk. If beating the heat is the goal, the loop trail is the clear choice.
| 📍 Address | San 108, Gyorae-ri, Jocheon-eup, Jeju City, Jeju Island |
|---|---|
| 🕖 Hours | Open access, no set hours — like most oreum on Jeju, there's no on-site management |
| 💰 Price | Free |
| 🚗 Parking | Free dirt lot at the trailhead, no fee |
| ⏱ Duration | 20–30 min from entrance to summit · about 1 hr for all 3 loop courses combined |
|---|---|
| 📐 Gradient | Loop trail is gentle · Course 1 (summit route) is steep |
| 🌳 Shade | Loop trail: plenty (cedar & cypress) · summit trail: little in some sections |
| 🥾 Surface | Dirt path (some rope and stone-step sections) |
📖 Related Post
Jeju Banong Oreum – An Easy Hike with Cedar Forests, Cypress Groves & Hallasan Views [Oreum #004]5. Gwaneumsa Trail — A Natural Air Conditioner on an Official Route
In summer, I always recommend the Gwaneumsa course up to the wooden bridge or, if you have more time, all the way to Tamna Valley. Along the way, there's a wind cave — and right in front of it, someone has set up a wooden bench, exactly where you'd want to sit and rest.
The air coming out of that cave is genuinely cold. In the sunlight, I could actually see a faint white haze of cold air drifting out — it was that dramatic. I checked with my thermometer: 15.9°C just outside the cave, 10.2°C inside, with humidity at 66% that day.
It's technically part of the official trail, but hidden enough behind the trees and rocks that most people just walk right past it — I've hiked this trail many times myself and only properly found it this time. After sweating my way down from the mountain, sitting on that bench in front of the cold air felt incredible. I didn't want to get up. I think I just sat there doing nothing for a good 20 to 30 minutes.
| 📍 Location | 588 Sallokbuk-ro, Odeung-dong, Jeju City, Jeju Island |
|---|---|
| 🚶 To the Wooden Bridge | Gentle forest path, suitable for anyone |
| 🚶♀️ To Tamna Valley Restroom | About 3.2km · 1–1.5 hrs |
| 🚗 Parking | Public lot available (switched to hourly pricing starting 2026 — check current rates before visiting) |
| 🏪 Store | None along the entire trail — bring water and snacks |
Wrapping Up
All five of these trails are great for escaping the summer sun, but each has its own charm. If you want an easy boardwalk walk, go for Jeolmul Natural Recreation Forest. If you want a long walk through deep, dense forest, Saryeoni Forest Trail is the one. If you want the flexibility to choose between a short stroll or a full oreum hike, Gyorae Natural Recreation Forest works well.
If you love Hinoki cypress forests, head to Banongoreum. And if you want a genuinely unusual, cool surprise along a forest trail, don't miss the wind cave on Gwaneumsa Trail.
Out of these five, Jeolmul Natural Recreation Forest is the one I end up at most often. There's more than one course to pick from — Jeolmul Oreum, Neonadeuri-gil, Jangsaeng-i Trail — so I can match the walk to how much time or energy I have that day. And once I'm done, there's a spring-fed footbath right there to cool my feet down. That combination is hard to beat.
Even in these shaded forests, midday can still get warm in summer, so I'd recommend visiting in the morning if you can. For trails without any stores, bring water and snacks ahead of time. If Jeju's coastal sun feels like too much on a given day, heading up into the jungsangan and into the forest is always a good move.
☀️ One More Thing from Sunny
As a local resident of Jeju, I explore the island in person and share practical tips, honest experiences, and photos from my travels.
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