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

81.8

°F

August 21, 00:48

Trend:

decreasing

Yesterday:

81.9°F

Tomorrow:

81.7°F

Sunrise:

06:00

Sunset:

19:14

Day Length:

13 h. 14 min.

Jeju City in August

Minimum:

58.9°F

Average:

60.9°F

Maximum:

62.1°F

Sea water temperature in Jeju City today

As of now, in Jeju City, the water temperature is 81.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.6°F lower 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 notably higher than the average recorded over the past two weeks, indicating a significant warming 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 85.2°F on 2016, while the historical minimum was 78.8°F on 2019.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 81.5°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
Aug 7 79.0°F 83.9°F 82.3°F
Aug 8 79.0°F 83.6°F 82.0°F
Aug 9 79.4°F 83.5°F 81.9°F
Aug 10 79.5°F 83.4°F 81.8°F
Aug 11 81.3°F 83.7°F 82.1°F
Aug 12 80.8°F 82.3°F 82.2°F
Aug 13 82.1°F 83.2°F 82.7°F
Aug 14 81.1°F 82.6°F 82.6°F
Aug 15 81.4°F 82.8°F 82.8°F
Aug 16 81.3°F 81.9°F 82.5°F
Aug 17 80.7°F 80.2°F 82.1°F
Aug 18 80.9°F 81.0°F 82.3°F
Aug 19 80.5°F 83.3°F 82.2°F
Aug 20 81.9°F 83.2°F 82.5°F
Aug 21 81.8°F 83.7°F 82.3°F
Aug 22 81.7°F 84.1°F 82.3°F
Aug 23 81.9°F 85.3°F 82.5°F
Aug 24 81.6°F 85.2°F 82.2°F
Aug 25 81.8°F 84.8°F 82.4°F
Aug 26 81.5°F 84.9°F 82.1°F
Aug 27 81.2°F 85.7°F 81.8°F
Aug 28 80.7°F 84.5°F 81.3°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, 76.0°F in Summer, and 72.9°F in Autumn.