- Water temperature
- 2–21°C
Updated September 2026 · Sources cited: koreaherald.com, padi.com
Good to know
Good to Know
- Seoul is an inland city—actual scuba diving requires 2-3 hour trips to the east coast or longer travel to Jeju Island; there is no city-center or immediate shore diving
- East coast (Gangneung, Sokcho, Goseong) is more accessible from Seoul than Jeju and more frequently used by Seoul-based divers; many dive centers in Seoul offer weekend packages to these areas
- Best diving season is May–October, with peak conditions June–September; winter water temperatures on the east coast can drop to 2°C (36°F) with very poor visibility
- You will need to arrange transport and coordinate with local dive operators; many require advance booking, especially for weekend trips
- Jeju Island offers more tropical diving with shore-dive options but requires a 1-hour flight or 3+ hour train ride from Seoul
- Kelp forests and wreck diving dominate the east coast; Jeju offers more reef and volcanic formations with better water clarity
- Most Seoul dive operators offer both Korean and English instruction; English-language PADI courses are available at major centers like NB Divers.
- Many courses can be completed in 1–2 days with pool training, then finished at coastal destinations; common trip destinations include Ulleung Island, Sokcho, Gangneung, and Jeju.
- Drysuit rental is widely available and recommended for year-round diving due to Korea's cold winter waters.
- Seoul is an urban dive-training hub; actual recreational ocean dives typically require day trips or overnight stays to coastal towns.
- Equipment rental is affordable (₩20,000–₩30,000 per day for pool/ocean training); many operators bundle this into course packages.
Best Diving Season
- Conditions
- Calm seas, peak visibility, kelp forests accessible
- Peak Period
- May-October
- Optimal Sub Period
- June-September (for tropical fish and macro life); late July to mid-August (after monsoon, before typhoons)
- Winter Note
- Colder with significantly lower visibility; much less accessible
Temperature Range
- Celsius Max
- 26
- Celsius Min
- 18
- Fahrenheit Max
- 79
- Fahrenheit Min
- 64
Water Temperature Context
- Jeju Range
- Warmer year-round; temperate climate
East Coast Summer
- Celsius
- 21
- Fahrenheit
- 70
East Coast Winter
- Celsius
- 2
- Fahrenheit
- 36
Certification Availability
- Entry Level Course
- PADI Open Water Diver
- Typical Entry Cost
- ₩490,000
- Discover Scuba Cost
- ₩140,000
- Cost Note
- Prices range ₩140,000–₩700,000+ depending on course level and provider; entry-level Open Water typically ₩350,000–₩490,000; additional fees may apply for pool/ocean training and equipment rental
Certifying Bodies And Levels
PADI
Levels Commonly Offered
- Open Water Diver
- Advanced Open Water Diver
- Rescue Diver
- Divemaster
- TecRec (technical diving)
- Rebreather/CCR
- Specialty courses (Nitrox, Deep, Night, Wreck, Underwater Photography, etc.)
PADI Freediving
Levels Commonly Offered
- Basic Freediver
- Intermediate Freediver
- Advanced Freediver
- Freediver Instructor
Dive Shop Operator Density
- Overview
- Seoul has multiple established PADI dive centers and operators
Named Operators
NB Divers
- Location
- Jamsil, Seoul
- Certification Levels
- Open Water through professional levels
Specialties
- PADI Scuba Diving
- PADI Freediving
- Multilingual instruction (Korean, English, Japanese)
- Drysuit rental
- Guided ocean tours
Jamsil Scuba School
- Features
- Large diving pool, onsite training facility
- Location
- Jamsil Sports Complex, Seoul
Specialties
- PADI Career Development Center
- TecRec (technical diving)
- Rebreather/CCR
- Scooter (DPV) rental
DiveTravel
- Location
- Jamsil, Seoul
Specialties
- 5 Star IDC Center
- Scuba and freediving
- Instructor training
Divehub
- Location
- Songpa-gu, Seoul
Specialties
- PADI Scuba Diving
- PADI TecRec
- PADI Freediving
Divelife
- Location
- Seoul
Specialties
- PADI Scuba Diving
- PADI Freediving
- Onsite training pool
Seoul Freediving Academy Center
- Location
- Seoul
Specialties
- PADI Freediving (basic through instructor level)
- PADI Scuba Diving
East Coast Sites
- Region
- East Sea (Gangwon Province)
- Travel Time From Seoul
- 2-3 hours by KTX train or car
Key Locations
Jumunjin
- Access
- Day trip from Seoul (approximately 2-3 hours)
- Location
- Gangwon Province
- Site Type
- Wreck dive (artificial reef)
- Best Season
- Late July to mid-August (after monsoon, before typhoons); July-October generally; summer provides calm seas
- Marine Life
- Rich marine biodiversity, abundant fish populations
- Primary Site
- Stella wreck
- Description
- Intentionally-sunk 2,400-ton vessel (2020) with descent lines on stern and bow sections
- Visibility Note
- Generally good
Depth Range
- Feet
- 33-85
- Meters
- 10-26
Gangneung/Dong Hae Area
- Access
- Weekend trip from Seoul (approximately 2 hours by train)
- Location
- East coast, Gangwon Province
- Site Type
- Multiple reef and wreck sites
- Best Season
- July-October; spring and autumn provide best visibility
- Marine Life
- Abundant marine life; schools of fish, sea urchins, kelp forests
- Note
- More frequently dived than Jeju by Seoul-based divers; used for certification courses
- Description
- Popular local diving destination with multiple reef and wreck dive opportunities; abundant marine life and generally good visibility
- Visibility Note
- Normally good
Sokcho Area
- Access
- 3+ hours from Seoul; day-trip or overnight required
- Location
- Far northeastern Gangwon Province, East Sea
- Site Type
- Rocky reef, artificial reef blocks
- Best Season
- July-October
- Visibility Note
- Highly variable; can be poor due to kelp sediment
- Temperature Note
- Water temperatures 3-5°C in winter; around 21°C even in August
Dive Sites
Mission Impossible / Artificial Reef Blocks
- Marine Life
- Sea anemones, gorgonians, sea stars; limited fish diversity reported
- Description
- Concrete block frames with swim-through passages; sandy bottom around blocks
Daejidae (Cheongganjeong Area)
- Marine Life
- Sea stars, anemones, nudibranch species, shrimp; fewer colorful fish
- Description
- Sandy bottom with large rocks
Goseong
- Access
- 2-3 hours from Seoul
- Location
- South-central east coast, Gangwon-do
- Site Type
- Mixed reef and beach diving
- Best Season
- July-October
- Description
- Emerging diving destination with good visibility and diverse marine ecosystems
Ulleungdo
- Access
- Multiple hours from Seoul; requires ferry from mainland (not day-trip friendly)
- Location
- Offshore island, East Sea
- Site Type
- Wall and wreck diving
- Marine Life
- Kelp forests, fish schools, giant Pacific octopuses (seasonal), jellyfish
- Note
- Not a practical day trip; included as regional reference
- Description
- Dramatic underwater cliffs and volcanic rock formations; kelp forests; specialized destination for seasoned divers
Jeju Island Sites
- Region
- Jeju Island, South Korea
- Access Summary
- Popular diving hub; majority of sites require boat access rather than shore diving
- Travel Time From Seoul
- 1+ hours by plane; 3+ hours by bullet train
Key Sites
Munseom Island
- Access
- Boat-dependent; not easily shore-accessible
- Location
- Off southern coast, Seogwipo, Jeju Island
- Site Type
- Reef, rock formations
- Best Season
- Late July to mid-August (after monsoon, before typhoons)
- Designation
- UNESCO Biosphere Reserve within Seogwipo Marine National Park
- Marine Life
- Exceptional clarity; diverse tropical-temperate fish species, soft corals, sea fans
- Primary Feature
- Elephant Rock (Gwaneumdo) area with submerged caves and tunnels through volcanic formations
- Description
- Rich underwater biodiversity; towering cliffs, submerged rock formations
Depth Range
- Feet
- 43-49
- Meters
- 13-15
Jeju Island Shore Dives (General)
- Access
- Some shore-dive accessible areas available
- Location
- Jeju Island
- Site Type
- Reef and rock formations
- Best Season
- Year-round with seasonal variation; warm-water tropical elements present
- Marine Life
- Soft corals, sea fans, colorful fish species, macro-rich environments
- Description
- Volcanic rock formations, coral reefs, kelp forests; temperate-tropical mix
- Temperature Note
- Warmer than east coast; temperate climate throughout year
Accessibility Note
All recreational diving from Seoul is day-trip or weekend-based via train, bus, or car to coastal areas. No shore diving is available within the city itself.
Seoul itself is an inland city with no nearby shore diving. Real scuba diving requires day trips or weekend travel to the east coast or Jeju Island. The primary accessible diving areas from Seoul are the East Sea coast (Gangneung, Sokcho, Goseong) and Jeju Island.
Diving Difficulty And Preparation
East coast diving dominated by boat-based trips; all sites require transport from Seoul. Most Seoul-based divers organize weekend or day trips through local dive centers. Spring and autumn visibility is best; summer and late summer provide warmest water and calmest seas. Winter diving is possible but challenging with cold water (near freezing on east coast) and poor visibility.
Freediving Crossover
- Details
- Multiple dive shops in Seoul offer both PADI scuba and PADI freediving courses, and equipment rental for both disciplines. NB Divers explicitly offers freediving equipment rental alongside scuba training. Seoul Freediving Academy Center specializes in freediving courses from introductory to instructor level. Freediving and scuba training are commonly available from the same operators.
- Crossover Present
- Yes
AI-generated estimateData refreshed September 2026
Sources cited for this category
These are the sources cited in this scuba diving research for this city. Individual figures may not each trace to one of them.
More About Seoul
Data last updated September 2026 · Verify anything important.