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

61.1

°F

April 17, 09:33

Trend:

stable

Yesterday:

60.8°F

Tomorrow:

61.1°F

Sunrise:

06:02

Sunset:

19:06

Day Length:

13 h. 4 min.

Jeju City in April

Minimum:

60.1°F

Average:

61.1°F

Maximum:

62.6°F

Sea water temperature in Jeju City today

As of now, in Jeju City, the water temperature is 61.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.9°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 61.4°F on 2023, while the historical minimum was 57.8°F on 2016.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 61.4°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Jeju City

Date Current Year

actual* / forecast**

last year 10 years average
Apr 3 59.7°F 57.0°F 58.8°F
Apr 4 60.1°F 56.4°F 58.9°F
Apr 5 59.7°F 56.6°F 59.0°F
Apr 6 58.4°F 57.2°F 58.9°F
Apr 7 60.0°F 57.1°F 58.8°F
Apr 8 61.0°F 57.8°F 59.0°F
Apr 9 60.2°F 56.9°F 59.0°F
Apr 10 60.3°F 57.1°F 59.1°F
Apr 11 60.4°F 57.9°F 59.1°F
Apr 12 61.1°F 57.9°F 59.1°F
Apr 13 60.6°F 57.7°F 59.0°F
Apr 14 61.3°F 58.2°F 59.3°F
Apr 15 61.8°F 57.7°F 59.1°F
Apr 16 60.8°F 57.7°F 58.9°F
Apr 17 61.1°F 58.1°F 59.3°F
Apr 18 61.1°F 57.1°F 59.3°F
Apr 19 61.0°F 57.2°F 59.1°F
Apr 20 61.1°F 57.4°F 59.3°F
Apr 21 61.0°F 56.2°F 59.2°F
Apr 22 61.7°F 58.3°F 59.8°F
Apr 23 61.8°F 59.0°F 59.9°F
Apr 24 61.8°F 58.4°F 59.9°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 60.3°F in Winter, 59.8°F in Spring, 75.9°F in Summer, and 72.9°F in Autumn.