Things to Do in Jeju in October
October weather, activities, events & insider tips
Shoulder Season · Good Value
October Weather in Jeju
Long-run averages for October
70°F (21°C)
High Temp
60°F (15°C)
Low Temp
3.7 inches (94 mm)
Rainfall
80%
Humidity
6
Sunny-Day UV
Is October Right for You?
Weigh the advantages and considerations before booking
Advantages
- + October delivers Hallasan's most reliable hiking window. Trails stay dry. The crater lake stays visible. Fog pauses its usual 20-minute rhythm. Worth it.
- + Mid-month the tberine harvest begins. Jeju smells of citrus blossoms, fresh fruit. Black pork smoke steps aside.
- + After Chuseok crowds vanish, hotel rates drop 30-40%. Ocean-view rooms that cost a fortune in September reappear.
- + Water holds at 21°C (70°F). Koreans call it cold. Foreigners call it perfect after summer's bathwater.
Considerations
- − Morning fog delays 40% of Jeju Airport flights. Book afternoon departures if you connect through Seoul.
- − Tangerine tractors clog coastal roads. The 30-minute Seogwipo-Jungmun drive can stretch to 90 minutes behind overloaded trucks.
- − UV index hits 8 even under clouds. The burn sneaks up. Air feels cool at 21°C (70°F).
Best Activities in October
Top things to do during your visit
October on Jeju is a pivot point. The island exhales after summer's heavy humidity, leaving a landscape rinsed clean and edged with russet and gold. The average high of seventy degrees, a mild twenty-one Celsius, arrives with crispness that makes a light sweater welcome in morning sea air. Evenings stay just cool enough. The average low of sixty degrees keeps them there, good for appreciating an open grill's warmth. Monsoon rains have retreated definitively. Average rainfall drops to three point seven inches, stark against September's nine inches and August's ten point seven. This shift opens the island. Long drives along coastal roads become unobstructed vistas. Trails through Gotjawal forest turn into journeys under a canopy beginning its slow, dramatic change. Locals move with renewed ease this month. Peak tourist season's frenetic energy fades. Daily island rhythms reassert themselves. You might see fishermen mending nets in quieter coves. Families harvest late-season Hallabong tangerines, their sweetness deeper now. The famous haenyeo, women divers, continue in still-warm seas. The spectacle feels less like performance. More like a window into a lasting tradition. This is a time for savoring produce. For hikes that don't leave you drenched. For sunsets over black basalt cliffs arriving earlier each evening, painting the western sky in clear, vivid strokes. October offers visitors particular clarity. Humidity that veils Mount Halla's peak in persistent shroud lifts. Some days, the summit is visible from lowlands, a dark silhouette against sharp blue sky. The sea retains enough summer warmth for brave swimmers. But beaches belong more to walkers than sunbathers. Waves crash on volcanic sand, echoing without summer crowd's din. It is a month suited for exploration. For seeing Jeju not as seasonal resort. But as a place with its own geology and culture. Best appreciated under these specific, temperate conditions.
Small Group Tour in South Jeju Healing Island w/Mt. Halla & Falls
guided_experienceYou'll feel cool, damp air rising from mossy stones of Eorimok valley on Mount Halla's slopes. A stark contrast follows. Thunderous roar and fine mist surround Cheonjeyeon Falls as it cascades over layered black rock. The journey moves from silent, primeval forest to dramatic coastal cliffs where sea churns far below.
It condenses essential contrasts of Jeju's southern landscape, the serene volcanic highlands and raw, powerful coast, into a single, cohesive day.
Insider tip: Wear shoes with excellent traction. Paths near waterfalls and on Halla trails can be slick with constant moisture and fallen leaves.
Small Group Tour in East Jeju Healing Island w/Woman Divers Show
entertainmentYou'll hear their sharp, whistling breaths as they surface. The clatter of catches into metal basins echoes off volcanic seawalls of Seongsan Ilchulbong. The tour often includes subtle, briny smell of seafood grilling nearby. Views across bright green barley fields soften stark lava rock.
It provides direct access to living heritage of haenyeo, a tradition unique to Jeju, set against the island's most well-known eastern landscapes.
Insider tip: Position yourself downwind from demonstration area. Avoid occasional strong scent of drying seaweed, which some find overpowering.
Private Tour in Jeju Island All Inclusive with Lunch
private_tourYou'll feel the island's rhythm at your own pace. Linger over abalone porridge at a seaside shack. Skip a site entirely to watch waves from a cliffside. The included lunch means tasting local specialties, black pork or grilled mackerel selected by your guide. Experience smoky, savory flavors that define Jeju cuisine. A dedicated vehicle makes transitions easy between stark, windswept coasts and sheltered inland forests.
It delivers fully personalized, deep exploration of Jeju, free from group schedule and enriched by guide's tailored narrative.
Insider tip: Discuss preferences with guide at start. If you dislike crowds, they can steer you to equally impressive but less-visited alternatives to major sites.
Jeju island Southern Unesco Mt.halla ONE day Bus Tour
culturalYou'll see vast, silent expanse of Seogwipo lava tubes. Feel cool, still air deep underground. Later stand before vast crater lake of Mount Halla's Baengnokdam, often shrouded in drifting, ethereal fog. The format provides broad overview. Good for first-time visitors wanting to witness scale of island's volcanic origins.
It is cost-effective way to comprehend monumental geological forces that shaped Jeju's southern half, visiting protected sites of universal significance.
Insider tip: Bring lightweight jacket regardless of outside weather. Temperature inside lava tubes remains chilly year-round.
Jeju island Jumbo taxi Private Tour with Mr.Hong west of jeju
transportStop to touch rough, textured surfaces of Dol Hareubang stone grandfather statues at quiet shrine. Walk along Oedolgae sea stack, listening to wind whip through pines. This service transforms transport into discovery. Unscripted moments follow. Sip fresh Hallabong juice at roadside stand overlooking terraced mandarin groves.
It combines convenience of private vehicle with subtle knowledge of local driver, offering relaxed yet informed passage through Jeju's less-touristed west.
Insider tip: Request stop at local mandarin farm if season is right. In October, some early varieties are being harvested and you can often sample tart-sweet fruit directly.
Full Day Essential Jeju Island Private tour for West Course
day_tripYou'll feel contrast between fine, white sand underfoot at beach and coarse, porous basalt of Yongmeori coastal walk. Your guide unpacks legends and geology that make each stop significant. Privacy allows pace that accommodates contemplation. Of intricate lava formations. Of deep blue ocean meeting sky.
It offers complete, comfortable, look at into natural wonders of western Jeju, with undivided attention of guide to enrich experience.
Insider tip: If day is clear, ask guide to time Yongmeori coastal walk for late afternoon, when low sun casts long, dramatic shadows across sculpted rock faces.
Where to Stay in Jeju in October
Hand-picked hotels across price tiers for October travellers.
Public Holidays in October
Dates that affect opening hours, transport and crowds
개천절
Known in English as National Foundation Day. Observed nationwide as a public holiday.
한글날
Known in English as Hangul Day. Observed nationwide as a public holiday.
개천절
Known in English as National Foundation Day. Observed nationwide as a public holiday.
한글날
Known in English as Hangul Day. Observed nationwide as a public holiday.
추석
Known in English as Chuseok. Observed nationwide as a public holiday.
개천절
Known in English as National Foundation Day. Observed nationwide as a public holiday.
추석
Known in English as Chuseok. Observed nationwide as a public holiday.
추석
Known in English as Chuseok. Observed nationwide as a public holiday.
한글날
Known in English as Hangul Day. Observed nationwide as a public holiday.
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View Jeju Packing List →Essential Tips
Insider knowledge and common pitfalls to avoid
Insider Knowledge
The 7:30 AM ferry to Udo Island runs half-empty in October. You get volcanic beaches without summer's shoulder-to-shoulder crowds.
Jeju black pork tastes better in October after the pigs gorge on fallen tangerines. Ask for 'gamgyul fed' at restaurants.
Locals hike Hallasan backwards. Start Gwaneumsa trail at 5 AM, descend Seongpanak by noon to beat the 1 PM fog.
Skip tourist farms. Buy at Namwon Market. Ajummas sell homegrown fruit for half price and let you taste first.
Avoid These Mistakes
Avoid morning departures. October fog delays 40% of flights before 10 AM. Afternoon flights leave on schedule.
Jeju isn't small when harvest hits. The 73 km (45 mile) ring road takes 2.5 hours with October tractors, not Google's 90 minutes.
Never wear shorts for tangerine picking. Trees carry thorns. Long sleeves save you from cat-scratch arms.
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