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

73.8

°F

July 6, 12:06

Trend:

increasing

Yesterday:

73.1°F

Tomorrow:

74.0°F

Sunrise:

05:29

Sunset:

19:47

Day Length:

14 h. 18 min.

Jeju City in July

Minimum:

59.4°F

Average:

60.9°F

Maximum:

62.0°F

Sea water temperature in Jeju City today

As of now, in Jeju City, the water temperature is 73.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.1°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 rise a bit.

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 81.6°F on 2025, while the historical minimum was 70.4°F on 2020.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 74.9°F, with minimum temperature starting at 74.0°F, while the maximum might reach 75.8°F.

Daily water temperature in Jeju City

Date Current Year

actual* / forecast**

last year 10 years average
Jun 22 71.1°F 69.7°F 70.1°F
Jun 23 70.6°F 69.8°F 70.1°F
Jun 24 70.7°F 69.9°F 70.4°F
Jun 25 71.1°F 68.9°F 70.8°F
Jun 26 70.7°F 70.9°F 71.3°F
Jun 27 71.8°F 71.3°F 71.7°F
Jun 28 71.8°F 72.6°F 71.8°F
Jun 29 72.9°F 74.3°F 72.0°F
Jun 30 73.0°F 73.4°F 72.2°F
Jul 1 72.4°F 73.5°F 72.4°F
Jul 2 72.1°F 76.0°F 73.0°F
Jul 3 72.8°F 77.9°F 73.4°F
Jul 4 73.5°F 78.4°F 73.6°F
Jul 5 73.1°F 80.2°F 74.2°F
Jul 6 73.8°F 81.6°F 74.9°F
Jul 7 74.0°F 82.7°F 75.1°F
Jul 8 74.4°F 82.9°F 75.5°F
Jul 9 74.7°F 82.0°F 75.8°F
Jul 10 75.0°F 81.7°F 76.1°F
Jul 11 75.1°F 80.2°F 76.2°F
Jul 12 75.5°F 79.8°F 76.6°F
Jul 13 75.8°F 79.6°F 76.9°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, 76.0°F in Summer, and 72.9°F in Autumn.