All data are in degrees Fahrenheit

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Water temperature in Jeju City

Detailed information about the current water temperature in Jeju City. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Jeju City now

60.0

°F

January 27, 11:33

Trend:

stable

Yesterday:

59.9°F

Tomorrow:

59.8°F

Sunrise:

07:34

Sunset:

18:00

Day Length:

10 h. 26 min.

Jeju City in February

Minimum:

59.8°F

Average:

61.0°F

Maximum:

62.9°F

Sea water temperature in Jeju City today

As of now, in Jeju City, the water temperature is 60.0°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.1°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 59.7°F on 2019, while the historical minimum was 57.9°F on 2018.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 59.5°F, the minimum temperature may reach 59.1°F, and the maximum might stay at 59.9°F.

Daily water temperature in Jeju City

Date Current Year

actual* / forecast**

last year 10 years average
Jan 13 61.2°F 59.8°F 60.3°F
Jan 14 61.0°F 59.2°F 60.2°F
Jan 15 60.8°F 59.1°F 60.2°F
Jan 16 61.7°F 59.1°F 60.1°F
Jan 17 60.9°F 58.9°F 59.9°F
Jan 18 60.5°F 58.8°F 59.8°F
Jan 19 59.8°F 59.1°F 59.6°F
Jan 20 59.7°F 58.8°F 59.5°F
Jan 21 59.9°F 58.9°F 59.5°F
Jan 22 59.6°F 59.1°F 59.2°F
Jan 23 59.4°F 59.3°F 59.1°F
Jan 24 59.1°F 59.1°F 59.0°F
Jan 25 60.0°F 58.8°F 59.1°F
Jan 26 59.9°F 58.8°F 58.8°F
Jan 27 60.0°F 58.7°F 58.9°F
Jan 28 59.8°F 58.5°F 58.8°F
Jan 29 59.9°F 58.2°F 58.8°F
Jan 30 59.8°F 58.3°F 58.7°F
Jan 31 59.4°F 57.6°F 58.3°F
Feb 1 59.3°F 57.4°F 58.2°F
Feb 2 59.1°F 57.3°F 58.1°F
Feb 3 59.3°F 57.3°F 58.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Jeju City by month

In Jeju City, the months July through September offer comfortable swimming conditions, which amounts to 106 swimming days.
The warmest water in Jeju City was recorded on August 14, 2016, reaching a 86.5°F. While the coldest temperature occurred on March 6, 2025, dipping to 54.9°F. The average readings by season are 60.2°F in Winter, 59.7°F in Spring, 75.9°F in Summer, and 72.9°F in Autumn.