What is the current water temperature in Incheon?

Q: What is the current water temperature in Incheon?

As of now, in Incheon, the water temperature is 5.12°C. 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.

South Korea > Incheon

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.

41.2

°F

January 2, 01:08

Trend:

decreasing

Yesterday:

41.6°F

Tomorrow:

41.0°F

Sunrise:

07:48

Sunset:

17:26

Day Length:

9 h. 38 min.

Incheon in January

Minimum:

41.1°F

Average:

42.3°F

Maximum:

44.2°F

Sea water temperature in Incheon today

As of now, in Incheon, the water temperature is 41.2°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 lower 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 44.1°F on 2016, while the historical minimum was 39.9°F on 2023.

latest data

last year

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 minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 40.4°F, the minimum temperature may reach 39.9°F, and the maximum might stay at 41.0°F.

Daily water temperature in Incheon

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	41.6°F	41.5°F	42.3°F
Jan 2	41.2°F	40.3°F	41.9°F
Jan 3	41.0°F	40.8°F	41.6°F
Jan 4	40.7°F	40.2°F	41.4°F
Jan 5	40.6°F	40.9°F	41.2°F
Jan 6	40.4°F	40.8°F	41.0°F
Jan 7	40.1°F	40.1°F	40.7°F
Jan 8	39.9°F	40.5°F	40.6°F
Jan 9	39.9°F	40.4°F	40.6°F
Dec 19	46.1°F	43.8°F	45.5°F
Dec 20	46.1°F	43.8°F	45.4°F
Dec 21	45.2°F	43.8°F	45.0°F
Dec 22	45.0°F	43.5°F	44.8°F
Dec 23	44.9°F	43.0°F	44.6°F
Dec 24	44.7°F	42.5°F	44.3°F
Dec 25	44.3°F	42.7°F	44.4°F
Dec 26	43.4°F	42.4°F	43.9°F
Dec 27	43.5°F	41.8°F	43.6°F
Dec 28	42.5°F	41.4°F	43.3°F
Dec 29	42.6°F	41.5°F	43.1°F
Dec 30	42.5°F	41.5°F	42.9°F
Dec 31	41.4°F	40.8°F	42.4°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 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	40.9°F	5mi
Ansan-si	41.4°F	11mi
Anyang-si	41.6°F	13mi
Goyang-si	42.5°F	16mi
Hwaseong-si	41.5°F	18mi

* current water temperature in this city

** straight line distance from Incheon