Jungmun Beach (Jeju Island) Surf Break

Lat Long: 33.24° N 126.41° E

Jungmun Beach (Jeju Island) Sea Temperature and Wetsuit Guide

Issued: 8 pm 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Jungmun Beach (Jeju Island) sea temperature is
26.0°C
1.5° 

Jungmun Beach (Jeju Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Jungmun Beach (Jeju Island) sea temperature is 26.0 °C

(1.5° warmer than normal for this time of year)

Mean: 24.5 °C
Range: 23.1 °C to 25.7 °C
Statistics for 20 Sep (1981–2005)

    Today, many surfers would wear a rashvest wetsuit.

    Sunny with very warm air temperatures, feeling like 25 °C once we account for any wind. Sea temperatures (26 °C) very warm too. Staying comfortable in the water at Jungmun Beach (Jeju Island) won't be a problem, but wear at least a rash-vest to keep the UV off.

    South Korea Sea Water Temperature

    Map of current South Korea
    Surface Water Temperatures

    (based on measurements from oceanographic satellites)
    South Korea Water Temperature Anomaly

    Map of current South Korea
    Sea Water Temperature Anomalies

    (compared with long term averages
    at this time of year)

    click thumbnails to expand

    Below is a graph of Historical Sea Surface Temperature for Jungmun Beach (Jeju Island). This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

    Jungmun Beach (Jeju Island) Water Temperature Graph

    All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.

    Actual sea surface water temperatures close to shore at Jungmun Beach (Jeju Island) can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Jungmun Beach (Jeju Island). Refer to our detailed weather forecasts for this information.

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