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 3.59°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.

38.5

°F

January 16, 02:42

Trend:

decreasing

Yesterday:

38.6°F

Tomorrow:

38.3°F

Sunrise:

07:47

Sunset:

17:39

Day Length:

9 h. 52 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 38.5°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 1.1°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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 41.6°F on 2020, while the historical minimum was 37.9°F on 2025.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 38.0°F, the minimum temperature may reach 37.8°F, and the maximum might stay at 38.3°F.

Daily water temperature in Incheon

Date	Current Year actual* / forecast**	last year	10 years average
Jan 2	41.0°F	40.3°F	41.9°F
Jan 3	41.0°F	40.8°F	41.7°F
Jan 4	40.9°F	40.2°F	41.4°F
Jan 5	39.6°F	40.9°F	41.1°F
Jan 6	39.8°F	40.8°F	41.0°F
Jan 7	39.7°F	40.1°F	40.7°F
Jan 8	39.7°F	40.5°F	40.6°F
Jan 9	39.9°F	40.4°F	40.6°F
Jan 10	39.9°F	39.4°F	40.3°F
Jan 11	39.3°F	38.5°F	39.9°F
Jan 12	38.9°F	38.4°F	39.6°F
Jan 13	38.3°F	37.7°F	39.4°F
Jan 14	38.3°F	37.3°F	39.4°F
Jan 15	38.6°F	37.7°F	39.6°F
Jan 16	38.5°F	37.9°F	39.5°F
Jan 17	38.3°F	36.8°F	39.3°F
Jan 18	38.0°F	36.4°F	39.1°F
Jan 19	38.1°F	37.5°F	39.1°F
Jan 20	38.1°F	37.7°F	39.2°F
Jan 21	37.8°F	36.6°F	38.9°F
Jan 22	37.8°F	36.9°F	38.9°F
Jan 23	37.8°F	36.8°F	38.9°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 Incheon by month

In Incheon, the months July through September offer comfortable swimming conditions, which amounts to 84 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, 50.1°F in Spring, 74.6°F in Summer, and 67.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bucheon-si	38.8°F	5mi
Ansan-si	39.1°F	11mi
Anyang-si	39.2°F	13mi
Goyang-si	39.3°F	16mi
Hwaseong-si	39.1°F	18mi

* current water temperature in this city

** straight line distance from Incheon