All data are in degrees Fahrenheit

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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

47.5

°F

December 14, 17:10

Trend:

decreasing

Yesterday:

47.9°F

Tomorrow:

47.2°F

Sunrise:

07:39

Sunset:

17:16

Day Length:

9 h. 37 min.

Incheon in December

Minimum:

38.0°F

Average:

39.6°F

Maximum:

42.6°F

Sea water temperature in Incheon today

As of now, in Incheon, the water temperature is 47.5°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 0.5°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 falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 48.4°F on 2021, while the historical minimum was 46.0°F on 2019.

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 46.3°F, the minimum temperature may reach 45.5°F, and the maximum might stay at 47.2°F.

Daily water temperature in Incheon

Date Current Year

actual* / forecast**

 last year 10 years average
Nov 30 52.0°F 52.2°F 52.5°F
Dec 1 51.7°F 51.4°F 52.1°F
Dec 2 51.9°F 49.1°F 51.6°F
Dec 3 52.3°F 50.4°F 51.3°F
Dec 4 51.1°F 50.0°F 50.7°F
Dec 5 50.3°F 49.8°F 50.1°F
Dec 6 49.9°F 49.4°F 49.9°F
Dec 7 47.8°F 49.1°F 49.5°F
Dec 8 48.2°F 48.5°F 49.1°F
Dec 9 47.8°F 47.8°F 48.7°F
Dec 10 48.6°F 47.7°F 48.5°F
Dec 11 47.6°F 47.4°F 48.1°F
Dec 12 48.2°F 47.0°F 47.8°F
Dec 13 47.9°F 46.9°F 47.5°F
Dec 14 47.5°F 46.3°F 47.0°F
Dec 15 47.2°F 46.3°F 46.8°F
Dec 16 47.0°F 46.5°F 46.5°F
Dec 17 46.5°F 45.4°F 46.1°F
Dec 18 46.1°F 44.6°F 45.7°F
Dec 19 45.9°F 43.8°F 45.5°F
Dec 20 45.7°F 43.8°F 45.3°F
Dec 21 45.5°F 43.8°F 45.0°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

January

February

March

April

May

June

July

August

September

October

November

December

In Incheon, the months July through September offer comfortable swimming conditions, which amounts to 83 swimming days.
The warmest water in Incheon was recorded on August 18, 2024, reaching a 85.3°F. While the coldest temperature occurred on February 15, 2025, dipping to 33.7°F. The average readings by season are 41.2°F in Winter, 49.9°F in Spring, 74.4°F in Summer, and 67.0°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Bucheon-si 48.2°F 5mi
Ansan-si 48.4°F 11mi
Anyang-si 48.4°F 13mi
Goyang-si 46.1°F 16mi
Hwaseong-si 48.4°F 18mi

* current water temperature in this city

** straight line distance from Incheon