Swimming in South Korea in april 2025 Sea temperature by city in april

Do you want to go to the beach in South Korea in april 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 april in South Korea by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in South Korea in april 2025

Here, find the average sea temperature in South Korea in april in several coastal cities.

Direct access: South in april | Northeast in april | North West in april | East in april | West in april

South in april

Busan

on average:

59°F

min: 56°F / max: 62°F

Jeju Island (Jejudo)

on average:

59°F

min: 55°F / max: 62°F

Namhae

on average:

57°F

min: 54°F / max: 61°F

Tongyeong

on average:

58°F

min: 56°F / max: 61°F

Ulsan

on average:

58°F

min: 54°F / max: 62°F

Yeosu

on average:

57°F

min: 53°F / max: 61°F

Northeast in april

Gangneung

on average:

54°F

min: 49°F / max: 58°F

Sokcho

on average:

53°F

min: 47°F / max: 58°F

North West in april

Incheon

on average:

47°F

min: 41°F / max: 54°F

Ansan-si

on average:

47°F

min: 41°F / max: 54°F

Hwaseong-si

on average:

48°F

min: 41°F / max: 54°F

East in april

Pohang

on average:

58°F

min: 52°F / max: 63°F

Gyeongju

on average:

58°F

min: 52°F / max: 63°F

Uljin

on average:

55°F

min: 51°F / max: 59°F

West in april

Gunsan

on average:

49°F

min: 43°F / max: 54°F

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Sea temperature in march in South Korea

Sea temperature in may in South Korea

Where should you go swimming in South Korea in the month of april?

Swimming in South Korea in april is cold (in the best case scenario)

In april in South Korea swimming conditions vary by city. Details below:

Swimming in april in Gaigeturi is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 56°F/max: 63°F).

Forget about swimming in Busan, Jeju Island (Jejudo), Gangneung, Incheon, Pohang, Sokcho, Gyeongju, Namhae, Tongyeong, Uljin, Ulsan, Yeosu, Ansan-si, Goseong, Gunsan, Haenam, Hwaseong-si, Jangan, Moppo, Muan, Oepo and Seogwipo in april! The water temperature is freezing, reaching as low as 56°F (and only 62°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!

Where to go swimming in South Korea in april: the map of sea temperatures

ideal swimming

pleasant swimming

cool swimming

cold swimming

freezing swimming

Water temperature and seasonal norms in april

Busan

	March	April	May
Average sea temperature	56°F	59°F	63°F
Minimum sea temperature	54°F	56°F	58°F
Maximum sea temperature	58°F	62°F	67°F
Average outside temperature	50°F	58°F	65°F
Maximum outside temperature	56°F	61°F	70°F
Minimum outside temperature	47°F	54°F	61°F
Precipitation	3.3in	3.7in	3.9in
Number of days of precipitation	4 jour(s) (13%)	5 jour(s) (16%)	5 jour(s) (15%)
Cloud cover	34%	34%	32%
Our opinion	freezing swimming	freezing swimming	cold swimming

More information on swimming in Busan in april

Jeju Island (Jejudo)

	March	April	May
Average sea temperature	57°F	59°F	62°F
Minimum sea temperature	54°F	55°F	58°F
Maximum sea temperature	59°F	62°F	68°F
Average outside temperature	50°F	58°F	65°F
Maximum outside temperature	54°F	61°F	68°F
Minimum outside temperature	47°F	54°F	61°F
Precipitation	4.8in	5.9in	6.1in
Number of days of precipitation	5 jour(s) (18%)	5 jour(s) (18%)	5 jour(s) (17%)
Cloud cover	40%	39%	37%
Our opinion	freezing swimming	freezing swimming	cold swimming

More information on swimming in Jeju Island (Jejudo) in april

Gangneung

	March	April	May
Average sea temperature	48°F	54°F	59°F
Minimum sea temperature	43°F	49°F	54°F
Maximum sea temperature	52°F	58°F	65°F
Average outside temperature	43°F	52°F	61°F
Maximum outside temperature	49°F	59°F	68°F
Minimum outside temperature	36°F	45°F	54°F
Precipitation	3.3in	3.9in	3.9in
Number of days of precipitation	4 jour(s) (14%)	5 jour(s) (16%)	5 jour(s) (15%)
Cloud cover	33%	31%	27%
Our opinion	freezing swimming	freezing swimming	freezing swimming

More information on swimming in Gangneung in april

Incheon

	March	April	May
Average sea temperature	40°F	47°F	56°F
Minimum sea temperature	36°F	41°F	49°F
Maximum sea temperature	45°F	54°F	64°F
Average outside temperature	45°F	56°F	65°F
Maximum outside temperature	50°F	61°F	70°F
Minimum outside temperature	41°F	50°F	59°F
Precipitation	2.3in	3.5in	5in
Number of days of precipitation	3 jour(s) (9%)	4 jour(s) (13%)	5 jour(s) (17%)
Cloud cover	30%	32%	30%
Our opinion	freezing swimming	freezing swimming	freezing swimming

More information on swimming in Incheon in april

Pohang

	March	April	May
Average sea temperature	53°F	58°F	61°F
Minimum sea temperature	50°F	52°F	57°F
Maximum sea temperature	56°F	63°F	65°F
Average outside temperature	47°F	56°F	65°F
Maximum outside temperature	52°F	61°F	70°F
Minimum outside temperature	41°F	49°F	58°F
Precipitation	3.9in	5.2in	4.2in
Number of days of precipitation	4 jour(s) (14%)	5 jour(s) (18%)	5 jour(s) (15%)
Cloud cover	36%	33%	30%
Our opinion	freezing swimming	freezing swimming	cold swimming

More information on swimming in Pohang in april

List of coastal cities in South Korea

Busan in april	freezing swimming
Jeju Island (Jejudo) in april	freezing swimming
Gangneung in april	freezing swimming
Incheon in april	freezing swimming
Pohang in april	freezing swimming
Sokcho in april	freezing swimming
Gyeongju in april	freezing swimming
Namhae in april	freezing swimming
Tongyeong in april	freezing swimming
Uljin in april	freezing swimming
Ulsan in april	freezing swimming
Yeosu in april	freezing swimming
Ansan-si in april	freezing swimming
Gaigeturi in april	cold swimming
Goseong in april	freezing swimming
Gunsan in april	freezing swimming
Haenam in april	freezing swimming
Hwaseong-si in april	freezing swimming
Jangan in april	freezing swimming
Moppo in april	freezing swimming
Muan in april	freezing swimming
Oepo in april	freezing swimming
Seogwipo in april	freezing swimming