Swimming in South Korea in august 2025 Sea temperature by city in august
Do you want to go to the beach in South Korea in august 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in august in South Korea by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in South Korea in august 2025
Here, find the average sea temperature in South Korea in august in several coastal cities.
South in august
80°F
min: 77°F / max: 83°F
80°F
min: 74°F / max: 85°F
Namhae
79°F
min: 76°F / max: 82°F
Tongyeong
80°F
min: 77°F / max: 82°F
Ulsan
79°F
min: 76°F / max: 82°F
Yeosu
79°F
min: 76°F / max: 82°F
Northeast in august
North West in august
75°F
min: 70°F / max: 79°F
Ansan-si
74°F
min: 70°F / max: 79°F
Hwaseong-si
75°F
min: 70°F / max: 79°F
East in august
77°F
min: 74°F / max: 80°F
Gyeongju
77°F
min: 75°F / max: 80°F
Uljin
76°F
min: 72°F / max: 81°F
West in august
Gunsan
78°F
min: 74°F / max: 82°F
Where should you go swimming in South Korea in the month of august?
Swimming in South Korea in august is ideal (in the best case scenario)
In august in South Korea swimming conditions vary by city. Details below:
In august in Busan, Jeju Island (Jejudo), Tongyeong, Gaigeturi, Goseong, Oepo and Seogwipo, swimming conditions are perfect! With water reaching a maximum of 83°F and an average of 80°F, going in the water (and staying there!) feels great.
As for Gangneung, Incheon, Pohang, Sokcho, Gyeongju, Namhae, Uljin, Ulsan, Yeosu, Ansan-si, Gunsan, Haenam, Hwaseong-si, Jangan, Moppo and Muan, swimming is pleasant in august. The sea water is 76°F on average (min: 72°F/max: 80°F) so you can easily spend time in the water.
Where to go swimming in South Korea in august: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in august
Busan
| August | |||
| Average sea temperature | 80°F | ||
| Minimum sea temperature | 77°F | ||
| Maximum sea temperature | 83°F | ||
| Average outside temperature | 81°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 77°F | ||
| Precipitation | 7.5in | ||
| Number of days of precipitation | 9 jour(s) (30%) | ||
| Cloud cover | 37% | ||
| Our opinion | ideal swimming |
More information on swimming in Busan in august
Jeju Island (Jejudo)
| August | |||
| Average sea temperature | 80°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 85°F | ||
| Average outside temperature | 81°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 77°F | ||
| Precipitation | 10.9in | ||
| Number of days of precipitation | 9 jour(s) (30%) | ||
| Cloud cover | 40% | ||
| Our opinion | ideal swimming |
More information on swimming in Jeju Island (Jejudo) in august
Gangneung
| August | |||
| Average sea temperature | 76°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 80°F | ||
| Average outside temperature | 76°F | ||
| Maximum outside temperature | 81°F | ||
| Minimum outside temperature | 68°F | ||
| Precipitation | 9.6in | ||
| Number of days of precipitation | 11 jour(s) (35%) | ||
| Cloud cover | 39% | ||
| Our opinion | pleasant swimming |
More information on swimming in Gangneung in august
Incheon
| August | |||
| Average sea temperature | 75°F | ||
| Minimum sea temperature | 70°F | ||
| Maximum sea temperature | 79°F | ||
| Average outside temperature | 81°F | ||
| Maximum outside temperature | 86°F | ||
| Minimum outside temperature | 77°F | ||
| Precipitation | 12.8in | ||
| Number of days of precipitation | 11 jour(s) (36%) | ||
| Cloud cover | 40% | ||
| Our opinion | pleasant swimming |
More information on swimming in Incheon in august
Pohang
| August | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 80°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 8.2in | ||
| Number of days of precipitation | 8 jour(s) (27%) | ||
| Cloud cover | 40% | ||
| Our opinion | pleasant swimming |
More information on swimming in Pohang in august
List of coastal cities in South Korea
| Busan in august | ideal swimming |
| Jeju Island (Jejudo) in august | ideal swimming |
| Gangneung in august | pleasant swimming |
| Incheon in august | pleasant swimming |
| Pohang in august | pleasant swimming |
| Sokcho in august | pleasant swimming |
| Gyeongju in august | pleasant swimming |
| Namhae in august | pleasant swimming |
| Tongyeong in august | ideal swimming |
| Uljin in august | pleasant swimming |
| Ulsan in august | pleasant swimming |
| Yeosu in august | pleasant swimming |
| Ansan-si in august | pleasant swimming |
| Gaigeturi in august | ideal swimming |
| Goseong in august | ideal swimming |
| Gunsan in august | pleasant swimming |
| Haenam in august | pleasant swimming |
| Hwaseong-si in august | pleasant swimming |
| Jangan in august | pleasant swimming |
| Moppo in august | pleasant swimming |
| Muan in august | pleasant swimming |
| Oepo in august | ideal swimming |
| Seogwipo in august | ideal swimming |