Hallasan National Park National Park

Volcanic national park centered on South Korea's highest peak

Hallasan National Park on Jeju Island centers on South Korea's highest peak, Hallasan. Hikers use multiple marked trails to reach the volcanic crater and alpine flora; spring and autumn treks are especially popular.

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Hallasan National Park at a Glance#

Address: Hallasan National Park, Jeju Province, South Korea

Website: https://english.knps.or.kr/

Hours: Open daily (trail access and summit routes may be seasonally restricted)

Admission: Free entry (no park admission fee)

About Hallasan National Park#

Hallasan National Park covers the central highlands of Jeju Island and protects Hallasan, a volcanic peak that rises to 1,947 meters above sea level and is the highest mountain in South Korea. The summit contains a crater lake known as Baengnokdam and the park is valued for its volcanic landforms and biodiversity.

Trails range from short walks to full-day summit routes; the two main summit approaches are the Seongpanak Trail (about 9.6 km one-way to the peak) and the Gwaneumsa Trail (about 8.7 km one-way). Hikers encounter alpine shrubland, mixed forests, and distinctive volcanic features, with ascent times commonly taking 4 to 6 hours depending on route and conditions.

Geologically the mountain is a shield volcano formed by repeated eruptions that built the island’s central massif; the slopes host a range of plant communities from subtropical to alpine. The park was designated a national park in 1970 and later became part of broader conservation recognitions for Jeju’s volcanic landscapes.

The park occupies the center of Jeju Island in Jeju Province and is accessible from towns around the island; trailheads and visitor facilities are distributed around the mountain’s base.

  • Elevation: The summit reaches 1,947 meters, making it the highest point in South Korea and a popular destination for day hikes to the crater lake.
  • Park status and seasonal access: Park status was designated in 1970; summit trails can close in winter and strong weather can make ascents hazardous, so check conditions before hiking.

What to See#

  • Baengnokdam (summit crater): The summit crater lake Baengnokdam sits at the mountain peak and is the highest natural feature on Jeju Island.
  • Seongpanak Trail: Seongpanak Trail leads to the summit and is approximately 9.6 km one-way from the trailhead to the peak, commonly used for summit ascents.
  • Gwaneumsa Trail: Gwaneumsa Trail approaches the summit from the west and is about 8.7 km one-way, offering a steeper route used by many hikers.

How to Get to Hallasan National Park#

Hallasan National Park occupies the center of Jeju Island; main public access points are the Seongpanak (south/east) and Gwaneumsa (north) trailheads. From Jeju International Airport or Jeju City you can reach the park by car or taxi (drive times typically under an hour depending on traffic); intercity and local buses also run from Jeju City and Seogwipo to stops near the main trailheads, where you will then start hikes that range from short walks to full-day ascents.

Tips for Visiting Hallasan National Park#

  • Choose your trail to match time and fitness: Seongpanak is longer and more gradual to the summit, Gwaneumsa is steeper and shorter; both are the two standard summit approaches and have different turnaround logistics.
  • Start very early (pre-dawn or at opening) to beat afternoon cloud build-up that often obscures summit views and to secure limited parking or the early buses to trailheads.
  • Check current trail and summit closures (Hallasan is frequently closed in winter or during bad weather) and consider the Yeongsil Trail if you want a shorter hike with dramatic panoramic cliffs without committing to a full summit ascent.

Best Time to Visit Hallasan National Park#

Best visited in spring or autumn for pleasant hiking conditions and good visibility; summer is wetter and winter can be cold with snow at higher elevations.

Spring
Apr-Jun · 10-18°C (lower at summit)
Mild temperatures and spring vegetation make low- to mid-elevation hikes enjoyable, though summit can remain noticeably colder.
Summer
Jul-Aug · 20-28°C (warmer at low elevations)
Warm and humid with the highest rainfall and the greatest chance of typhoon-related weather; trails can be wet and visibility reduced.
Autumn
Sep-Nov · 10-20°C
Cooler, drier conditions and good visibility make this a prime season for hiking and panoramic views.

Weather & Climate near Hallasan National Park#

Climate

Hallasan National Park's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -6°C to 21°C. Heavy rainfall (2146 mm/year), wettest in July.

Air Quality: AQI 53 Moderate
Best Time to Visit
AugustSeptemberOctober
Temperature & Rainfall
Temperature Range
31°
Warmest Month
-2°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -6° - 0° -11° 74 mm overcast 77% 8.1 m/s 0.4 low 10.1h
February Poor -6° - 1° -9° 91 mm overcast 75% 6.9 m/s 0.6 moderate 10.9h
March Poor -3° - 5° -4° 138 mm overcast 74% 5.9 m/s 0.9 moderate 11.9h
April Poor 2° - 10° 2° 191 mm overcast 79% 5.5 m/s 1.2 high 12.9h
May Poor 7° - 14° 10° 216 mm overcast 85% 4.6 m/s 1.5 high 13.8h
June Acceptable 11° - 17° 14° 314 mm overcast 89% 4.6 m/s 1.4 high 14.2h
July Acceptable 15° - 20° 18° 373 mm overcast 90% 4.6 m/s 1.7 very high 14.0h
August Good 16° - 21° 18° 311 mm partly cloudy 84% 4.4 m/s 1.8 very high 13.2h
September Acceptable 12° - 18° 15° 205 mm partly cloudy 81% 4.8 m/s 1.3 high 12.3h
October Acceptable 6° - 13° 7° 91 mm partly cloudy 74% 5.2 m/s 1.0 moderate 11.2h
November Poor 1° - 8° 0° 84 mm partly cloudy 74% 6.9 m/s 0.5 moderate 10.3h
December Poor -4° - 3° -7° 58 mm overcast 76% 7.6 m/s 0.3 low 9.8h

Nearby Attractions to Hallasan National Park#