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

82.7

°F

August 26, 18:38

Trend:

stable

Yesterday:

82.4°F

Tomorrow:

82.4°F

Sunrise:

05:50

Sunset:

18:59

Day Length:

13 h. 9 min.

Ulsan in September

Minimum:

56.0°F

Average:

58.5°F

Maximum:

61.0°F

Sea water temperature in Ulsan today

As of now, in Ulsan, the water temperature is 82.7°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 2.7°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 fall 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 84.1°F on 2024, while the historical minimum was 76.0°F on 2022.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 81.7°F, the minimum temperature may reach 81.0°F, and the maximum might stay at 82.4°F.

Daily water temperature in Ulsan

Date Current Year

actual* / forecast**

last year 10 years average
Aug 12 80.8°F 80.7°F 80.5°F
Aug 13 80.5°F 80.6°F 80.6°F
Aug 14 80.8°F 80.8°F 80.7°F
Aug 15 80.9°F 81.4°F 80.7°F
Aug 16 81.2°F 81.4°F 80.7°F
Aug 17 81.0°F 81.7°F 80.6°F
Aug 18 81.2°F 80.3°F 80.3°F
Aug 19 80.9°F 81.9°F 80.3°F
Aug 20 80.9°F 82.4°F 80.7°F
Aug 21 82.1°F 81.3°F 80.5°F
Aug 22 82.5°F 83.1°F 80.5°F
Aug 23 81.5°F 83.1°F 80.5°F
Aug 24 82.7°F 82.0°F 80.3°F
Aug 25 82.4°F 81.9°F 80.2°F
Aug 26 82.7°F 81.0°F 80.0°F
Aug 27 82.4°F 79.9°F 79.7°F
Aug 28 81.9°F 79.2°F 79.2°F
Aug 29 81.8°F 79.8°F 79.1°F
Aug 30 81.8°F 81.7°F 79.0°F
Aug 31 81.5°F 81.6°F 78.8°F
Sep 1 81.4°F 81.4°F 78.7°F
Sep 2 81.0°F 79.9°F 78.2°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 93 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, 74.5°F in Summer, and 71.4°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Pohang 81.9°F 34mi
Busan 84.1°F 34mi
Changwon 85.7°F 42mi

* current water temperature in this city

** straight line distance from Ulsan