Haeundae Beach sea temperature today: 26°C – beach water temperature, Haeundae Beach, South Korea
South Korea · Busan
Haeundae Beach
Sea
26.1°C79.0°F
Air
UV
Beach day
⁦23–28°C⁩

Last updated ·

Today, September 13, the sea temperature at Haeundae Beach is 26.1 °C (79 °F). That matches the usual average of 25.7 °C in September. Comfortable for swimming from June to November.

Beachfront hotels in this photo: Signiel Busan.

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Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in August (26.9°C). Coldest in February (13.2°C). Comfortable for swimming from June to November.

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
MonthSea · MinSea · AvgSea · MaxAir · MinAir · AvgAir · Max
January13.9°C14.1°C14.2°C3.3°C4.6°C6.9°C
February12.4°C13.2°C13.7°C4.4°C5.9°C8.3°C
March12.3°C13.5°C14.4°C9.0°C10.5°C12.6°C
April13.3°C14.7°C15.3°C12.6°C14.1°C15.9°C
May15.6°C16.5°C17.0°C15.6°C17.1°C18.8°C
June19.1°C20.1°C20.7°C20.1°C21.3°C22.6°C
July23.0°C24.2°C25.2°C24.6°C25.6°C26.7°C
August25.8°C26.9°C28.0°C25.9°C26.9°C28.2°C
September24.6°C25.7°C27.2°C23.4°C24.3°C25.6°C
October21.9°C22.9°C23.7°C17.8°C18.9°C20.7°C
November18.1°C19.3°C20.3°C11.5°C13.1°C15.4°C
December15.8°C16.2°C16.8°C4.9°C6.1°C8.5°C

About Haeundae Beach

Busan's southeast coast meets the Sea of Japan along Haeundae Beach, framed by the Marine City skyline arc and the 411-metre LCT The Sharp, completed in 2019 as the country's fourth-tallest tower. Songjeong Beach in the next bay east draws a younger surf crowd to its open swell, while Gwangalli Beach to the south frames the night-lit Gwangan Bridge across the water. Sea temperatures hold between 24 and 26 °C75 and 79 °F from July through September, with Gimhae International 45 minutes by metro.

Frequently asked questions

Today, September 13, the sea at Haeundae Beach is 26.1 °C (79 °F)79 °F (26.1 °C) – ideal for swimming for most people. The usual September average is 25.7 °C78 °F.

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C55 °F icy, 13–18 °C55–64 °F cold, 18–23 °C64–73 °F refreshing, 23–28 °C73–82 °F pleasantly warm and above 28 °C82 °F like a bath. Right now the sea at Haeundae Beach is 26.1 °C79 °F.

In May the sea at Haeundae Beach (Busan, South Korea) averages 16.5 °C62 °F – cold, most people reach for a wetsuit. It keeps warming until August, when it peaks at 26.9 °C80 °F.

In October the sea at Haeundae Beach (Busan, South Korea) still averages 22.9 °C73 °F – refreshing, good for a short swim. It peaks in August at 26.9 °C80 °F and cools slowly from there.