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

May 1, 09:40

Trend:

increasing

Yesterday:

59.9°F

Tomorrow:

60.1°F

Sunrise:

05:46

Sunset:

19:16

Day Length:

13 h. 30 min.

Jeju City in May

Minimum:

58.8°F

Average:

60.9°F

Maximum:

62.2°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 0.7°F lower 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

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 62.4°F on 2024, while the historical minimum was 57.7°F on 2017.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 60.2°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 17 60.4°F 58.1°F 59.4°F
Apr 18 60.0°F 57.1°F 59.3°F
Apr 19 60.6°F 57.2°F 59.3°F
Apr 20 60.8°F 57.4°F 59.4°F
Apr 21 60.5°F 56.2°F 59.3°F
Apr 22 60.3°F 58.3°F 59.8°F
Apr 23 59.9°F 59.0°F 59.9°F
Apr 24 61.6°F 58.4°F 60.1°F
Apr 25 61.7°F 57.9°F 60.0°F
Apr 26 61.0°F 59.7°F 60.1°F
Apr 27 61.1°F 58.7°F 60.3°F
Apr 28 61.1°F 59.9°F 60.3°F
Apr 29 60.5°F 60.7°F 60.7°F
Apr 30 59.9°F 59.8°F 60.6°F
May 1 60.0°F 60.7°F 60.8°F
May 2 60.1°F 59.8°F 60.9°F
May 3 60.2°F 60.3°F 61.0°F
May 4 60.1°F 60.0°F 60.9°F
May 5 60.2°F 59.8°F 60.9°F
May 6 60.5°F 60.0°F 61.3°F
May 7 60.4°F 59.6°F 61.2°F
May 8 60.1°F 59.1°F 60.8°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.