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

71.3

°F

June 28, 01:45

Trend:

increasing

Yesterday:

70.9°F

Tomorrow:

71.8°F

Sunrise:

05:09

Sunset:

19:42

Day Length:

14 h. 33 min.

Ulsan in July

Minimum:

57.5°F

Average:

58.8°F

Maximum:

60.1°F

Sea water temperature in Ulsan today

As of now, in Ulsan, the water temperature is 71.3°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 0.3°F higher 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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 72.4°F on 2020, while the historical minimum was 69.2°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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 72.2°F, with minimum temperature starting at 71.8°F, while the maximum might reach 72.9°F.

Daily water temperature in Ulsan

Date Current Year

actual* / forecast**

last year 10 years average
Jun 14 68.4°F 66.8°F 67.9°F
Jun 15 69.9°F 66.0°F 68.5°F
Jun 16 70.8°F 66.3°F 68.4°F
Jun 17 73.2°F 66.6°F 69.0°F
Jun 18 72.7°F 66.6°F 69.0°F
Jun 19 70.7°F 65.1°F 69.2°F
Jun 20 71.3°F 66.0°F 69.3°F
Jun 21 72.5°F 66.2°F 69.4°F
Jun 22 70.7°F 66.6°F 69.5°F
Jun 23 69.6°F 66.8°F 70.1°F
Jun 24 70.3°F 66.2°F 70.3°F
Jun 25 70.0°F 66.4°F 70.1°F
Jun 26 71.1°F 68.9°F 70.8°F
Jun 27 70.9°F 68.6°F 70.7°F
Jun 28 71.3°F 70.7°F 71.1°F
Jun 29 71.8°F 72.6°F 71.6°F
Jun 30 71.8°F 73.2°F 71.6°F
Jul 1 71.8°F 72.7°F 71.5°F
Jul 2 72.2°F 75.2°F 71.9°F
Jul 3 72.3°F 74.3°F 72.0°F
Jul 4 72.9°F 77.1°F 72.7°F
Jul 5 72.8°F 76.4°F 72.6°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 92 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 58.2°F in Winter, 58.6°F in Spring, 74.4°F in Summer, and 71.4°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Pohang 69.9°F 34mi
Busan 72.2°F 34mi
Changwon 72.5°F 42mi

* current water temperature in this city

** straight line distance from Ulsan