All data are in degrees Fahrenheit

en

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

56.5

°F

February 7, 22:07

Trend:

stable

Yesterday:

56.0°F

Tomorrow:

56.4°F

Sunrise:

07:18

Sunset:

17:56

Day Length:

10 h. 38 min.

Ulsan in February

Minimum:

57.6°F

Average:

59.3°F

Maximum:

61.0°F

Sea water temperature in Ulsan today

As of now, in Ulsan, the water temperature is 56.5°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.6°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly 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 58.3°F on 2020, while the historical minimum was 54.1°F on 2025.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 56.4°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Ulsan

Date Current Year

actual* / forecast**

last year 10 years average
Jan 24 57.2°F 56.8°F 57.1°F
Jan 25 56.2°F 57.2°F 56.9°F
Jan 26 56.0°F 57.1°F 56.6°F
Jan 27 57.3°F 57.1°F 56.8°F
Jan 28 56.7°F 55.5°F 56.6°F
Jan 29 57.3°F 56.1°F 56.6°F
Jan 30 58.0°F 54.7°F 56.3°F
Jan 31 58.0°F 54.1°F 56.2°F
Feb 1 57.4°F 54.0°F 56.0°F
Feb 2 57.0°F 54.5°F 56.0°F
Feb 3 56.3°F 55.2°F 55.9°F
Feb 4 57.1°F 55.5°F 56.2°F
Feb 5 56.0°F 55.9°F 56.2°F
Feb 6 56.0°F 55.2°F 56.0°F
Feb 7 56.5°F 54.1°F 55.9°F
Feb 8 56.4°F 54.4°F 55.8°F
Feb 9 56.4°F 53.4°F 55.8°F
Feb 10 56.6°F 54.0°F 56.0°F
Feb 11 56.2°F 54.2°F 55.7°F
Feb 12 56.6°F 54.4°F 56.0°F
Feb 13 56.3°F 53.9°F 55.7°F
Feb 14 56.2°F 53.9°F 55.6°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, 58.5°F in Spring, 74.4°F in Summer, and 71.4°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Pohang 53.1°F 34mi
Busan 56.2°F 34mi
Changwon 48.1°F 42mi

* current water temperature in this city

** straight line distance from Ulsan