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

75.1

°F

October 17, 07:26

Trend:

stable

Yesterday:

75.1°F

Tomorrow:

74.8°F

Sunrise:

06:30

Sunset:

17:46

Day Length:

11 h. 16 min.

Ulsan in October

Minimum:

55.3°F

Average:

58.1°F

Maximum:

60.9°F

Sea water temperature in Ulsan today

As of now, in Ulsan, the water temperature is 75.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.9°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 74.8°F on 2021, while the historical minimum was 69.1°F on 2020.

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 74.3°F, the minimum temperature may reach 73.8°F, and the maximum might stay at 74.8°F.

Daily water temperature in Ulsan

Date Current Year

actual* / forecast**

last year 10 years average
Oct 3 75.2°F 77.1°F 73.8°F
Oct 4 74.8°F 76.7°F 73.7°F
Oct 5 75.8°F 76.4°F 73.6°F
Oct 6 75.6°F 76.8°F 73.6°F
Oct 7 75.3°F 76.3°F 73.5°F
Oct 8 75.1°F 76.0°F 73.3°F
Oct 9 75.1°F 75.1°F 73.4°F
Oct 10 73.8°F 75.1°F 73.0°F
Oct 11 74.4°F 76.1°F 73.0°F
Oct 12 74.0°F 74.4°F 72.2°F
Oct 13 74.2°F 73.6°F 72.1°F
Oct 14 74.2°F 73.6°F 72.0°F
Oct 15 75.3°F 73.6°F 72.0°F
Oct 16 75.1°F 73.3°F 71.2°F
Oct 17 75.1°F 73.2°F 71.3°F
Oct 18 74.8°F 73.3°F 71.0°F
Oct 19 74.5°F 73.0°F 70.6°F
Oct 20 74.5°F 72.8°F 70.6°F
Oct 21 74.5°F 72.7°F 70.6°F
Oct 22 74.4°F 72.5°F 70.5°F
Oct 23 73.9°F 72.1°F 70.1°F
Oct 24 73.8°F 71.7°F 69.9°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 Ulsan by month

In Ulsan, the months July through September offer comfortable swimming conditions, which amounts to 86 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 71.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Pohang 72.5°F 34mi
Busan 74.2°F 34mi
Changwon 72.0°F 42mi

* current water temperature in this city

** straight line distance from Ulsan