All data are in degrees Fahrenheit

en

Water temperature in Incheon

Detailed information about the current water temperature in Incheon. 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 Incheon now

83.3

°F

August 10, 14:51

Trend:

stable

Yesterday:

83.5°F

Tomorrow:

83.5°F

Sunrise:

05:44

Sunset:

19:32

Day Length:

13 h. 48 min.

Incheon in August

Minimum:

38.1°F

Average:

40.6°F

Maximum:

43.6°F

Sea water temperature in Incheon today

As of now, in Incheon, the water temperature is 83.3°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 3.0°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 rise 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 83.2°F on 2018, while the historical minimum was 75.5°F on 2020.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 83.4°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Incheon

Date Current Year

actual* / forecast**

last year 10 years average
Jul 27 80.0°F 81.7°F 78.0°F
Jul 28 79.5°F 82.8°F 78.4°F
Jul 29 78.2°F 82.8°F 78.9°F
Jul 30 79.8°F 81.9°F 79.2°F
Jul 31 80.4°F 81.4°F 79.5°F
Aug 1 81.7°F 81.1°F 79.8°F
Aug 2 82.2°F 82.0°F 79.9°F
Aug 3 82.8°F 82.7°F 80.2°F
Aug 4 83.5°F 82.1°F 80.2°F
Aug 5 84.4°F 80.7°F 80.6°F
Aug 6 84.9°F 82.6°F 81.1°F
Aug 7 85.8°F 81.0°F 81.3°F
Aug 8 85.9°F 81.0°F 81.3°F
Aug 9 83.5°F 80.3°F 80.5°F
Aug 10 83.3°F 80.0°F 80.3°F
Aug 11 83.5°F 80.2°F 80.5°F
Aug 12 83.3°F 80.1°F 80.3°F
Aug 13 83.4°F 81.9°F 80.4°F
Aug 14 83.4°F 81.7°F 80.4°F
Aug 15 83.3°F 80.3°F 80.3°F
Aug 16 83.7°F 80.5°F 80.7°F
Aug 17 83.6°F 81.0°F 80.6°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 Incheon by month

In Incheon, the months July through September offer comfortable swimming conditions, which amounts to 86 swimming days.
The warmest water in Incheon was recorded on August 8, 2026, reaching a 85.9°F. While the coldest temperature occurred on February 5, 2026, dipping to 33.1°F. The average readings by season are 41.1°F in Winter, 50.2°F in Spring, 74.8°F in Summer, and 67.0°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Bucheon-si 83.5°F 5mi
Ansan-si 81.3°F 11mi
Anyang-si 81.2°F 13mi
Goyang-si 83.3°F 16mi
Hwaseong-si 81.4°F 18mi

* current water temperature in this city

** straight line distance from Incheon