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

81.1

°F

August 14, 21:44

Trend:

stable

Yesterday:

82.1°F

Tomorrow:

81.3°F

Sunrise:

05:55

Sunset:

19:22

Day Length:

13 h. 27 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 81.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.7°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 rise a bit.

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 minimum temperature for this date. The maximum temperature recorded for this date was 86.5°F on 2016, while the historical minimum was 80.9°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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 80.8°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
Jul 31 85.9°F 83.5°F 81.7°F
Aug 1 85.7°F 83.8°F 82.0°F
Aug 2 85.2°F 82.4°F 82.0°F
Aug 3 84.5°F 82.5°F 82.2°F
Aug 4 82.9°F 84.0°F 82.5°F
Aug 5 81.9°F 84.3°F 82.3°F
Aug 6 80.3°F 84.6°F 82.4°F
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 82.8°F
Aug 15 81.3°F 82.8°F 82.9°F
Aug 16 80.9°F 81.9°F 82.6°F
Aug 17 80.6°F 80.2°F 82.3°F
Aug 18 80.7°F 81.0°F 82.4°F
Aug 19 80.7°F 83.3°F 82.4°F
Aug 20 80.8°F 83.2°F 82.5°F
Aug 21 80.7°F 83.7°F 82.3°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.