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

79.6

°F

August 30, 04:12

Trend:

decreasing

Yesterday:

79.8°F

Tomorrow:

79.3°F

Sunrise:

05:53

Sunset:

18:54

Day Length:

13 h. 1 min.

Ulsan in September

Minimum:

56.0°F

Average:

58.2°F

Maximum:

61.0°F

Sea water temperature in Ulsan today

As of now, in Ulsan, the water temperature is 79.6°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.0°F higher 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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. 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 81.6°F on 2024, while the historical minimum was 76.6°F on 2015.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 78.9°F, the minimum temperature may reach 78.6°F, and the maximum might stay at 79.3°F.

Daily water temperature in Ulsan

Date Current Year

actual* / forecast**

last year 10 years average
Aug 16 81.4°F 84.4°F 80.6°F
Aug 17 81.7°F 84.6°F 80.3°F
Aug 18 80.3°F 85.3°F 80.1°F
Aug 19 81.9°F 84.7°F 80.1°F
Aug 20 82.4°F 84.9°F 80.5°F
Aug 21 81.3°F 84.5°F 80.2°F
Aug 22 83.1°F 84.6°F 80.2°F
Aug 23 83.1°F 84.4°F 80.3°F
Aug 24 82.0°F 84.0°F 80.0°F
Aug 25 81.9°F 84.9°F 79.8°F
Aug 26 81.0°F 84.1°F 79.8°F
Aug 27 79.9°F 83.4°F 79.3°F
Aug 28 79.2°F 82.7°F 78.9°F
Aug 29 79.8°F 81.8°F 78.8°F
Aug 30 79.6°F 81.6°F 78.5°F
Aug 31 79.3°F 80.3°F 78.3°F
Sep 1 79.2°F 80.0°F 78.2°F
Sep 2 78.9°F 81.0°F 77.9°F
Sep 3 78.8°F 80.5°F 77.8°F
Sep 4 78.6°F 80.1°F 77.5°F
Sep 5 78.7°F 80.0°F 77.7°F
Sep 6 78.8°F 81.0°F 77.7°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, 74.2°F in Summer, and 71.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Pohang 77.0°F 34mi
Busan 81.3°F 34mi
Changwon 82.4°F 42mi

* current water temperature in this city

** straight line distance from Ulsan