All data are in degrees Fahrenheit

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Water temperature in Ulsan

Detailed information about the current water temperature in Ulsan. 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 Ulsan now

68.9

°F

June 26, 22:25

Trend:

stable

Yesterday:

66.4°F

Tomorrow:

68.9°F

Sunrise:

05:09

Sunset:

19:42

Day Length:

14 h. 33 min.

Ulsan in July

Minimum:

57.1°F

Average:

58.6°F

Maximum:

60.1°F

Sea water temperature in Ulsan today

As of now, in Ulsan, the water temperature is 68.9°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.8°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable 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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 73.4°F on 2022, while the historical minimum was 68.9°F on 2015.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 69.3°F, with minimum temperature starting at 68.9°F, while the maximum might reach 69.8°F.

Daily water temperature in Ulsan

Date Current Year

actual* / forecast**

last year 10 years average
Jun 12 66.8°F 70.9°F 67.6°F
Jun 13 66.7°F 68.9°F 67.6°F
Jun 14 66.8°F 70.0°F 67.7°F
Jun 15 66.0°F 71.7°F 68.2°F
Jun 16 66.3°F 71.1°F 68.1°F
Jun 17 66.6°F 71.0°F 68.5°F
Jun 18 66.6°F 69.5°F 68.5°F
Jun 19 65.1°F 71.5°F 68.8°F
Jun 20 66.0°F 70.8°F 68.9°F
Jun 21 66.2°F 70.4°F 68.9°F
Jun 22 66.6°F 70.7°F 69.2°F
Jun 23 66.8°F 70.8°F 69.9°F
Jun 24 66.2°F 73.5°F 70.1°F
Jun 25 66.4°F 72.9°F 69.9°F
Jun 26 68.9°F 72.7°F 70.7°F
Jun 27 68.9°F 72.4°F 70.7°F
Jun 28 69.0°F 72.1°F 70.8°F
Jun 29 69.4°F 71.2°F 71.2°F
Jun 30 69.3°F 70.8°F 71.1°F
Jul 1 69.4°F 70.6°F 71.2°F
Jul 2 69.6°F 71.0°F 71.4°F
Jul 3 69.8°F 71.2°F 71.6°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 Ulsan by month

In Ulsan, the months July through September offer comfortable swimming conditions, which amounts to 83 swimming days.
The warmest water in Ulsan was recorded on August 18, 2024, reaching a 85.3°F. While the coldest temperature occurred on March 1, 2025, dipping to 52.5°F. The average readings by season are 58.1°F in Winter, 58.4°F in Spring, 74.0°F in Summer, and 71.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Pohang 68.7°F 34mi
Busan 69.4°F 34mi
Changwon 70.8°F 42mi

* current water temperature in this city

** straight line distance from Ulsan