All data are in degrees Fahrenheit

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Water temperature in Ansan-si

Detailed information about the current water temperature in Ansan-si. 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 Ansan-si now

79.1

°F

August 25, 13:49

Trend:

stable

Yesterday:

78.9°F

Tomorrow:

78.8°F

Sunrise:

05:57

Sunset:

19:13

Day Length:

13 h. 16 min.

Ansan-si in September

Minimum:

39.7°F

Average:

41.3°F

Maximum:

45.2°F

Sea water temperature in Ansan-si today

As of now, in Ansan-si, the water temperature is 79.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is about the same as 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 fall a bit.

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 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 80.6°F on 2025, while the historical minimum was 77.7°F on 2017.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 77.9°F, the minimum temperature may reach 77.4°F, and the maximum might stay at 78.8°F.

Daily water temperature in Ansan-si

Date Current Year

actual* / forecast**

last year 10 years average
Aug 11 81.6°F 80.0°F 80.5°F
Aug 12 79.8°F 77.2°F 80.0°F
Aug 13 79.4°F 78.5°F 79.8°F
Aug 14 80.0°F 78.9°F 79.6°F
Aug 15 79.8°F 77.2°F 79.6°F
Aug 16 80.0°F 79.3°F 80.1°F
Aug 17 79.8°F 78.7°F 79.8°F
Aug 18 78.2°F 80.0°F 79.7°F
Aug 19 79.5°F 80.3°F 79.5°F
Aug 20 79.0°F 80.0°F 79.3°F
Aug 21 79.9°F 80.9°F 79.4°F
Aug 22 79.8°F 82.3°F 79.4°F
Aug 23 78.9°F 80.2°F 78.8°F
Aug 24 78.9°F 80.5°F 78.8°F
Aug 25 79.1°F 80.6°F 79.1°F
Aug 26 78.8°F 81.0°F 78.7°F
Aug 27 78.3°F 79.8°F 78.3°F
Aug 28 77.9°F 79.5°F 77.8°F
Aug 29 77.7°F 80.5°F 77.7°F
Aug 30 77.8°F 80.7°F 77.7°F
Aug 31 77.4°F 80.2°F 77.3°F
Sep 1 77.5°F 80.4°F 77.5°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 Ansan-si by month

In Ansan-si, the months July through September offer comfortable swimming conditions, which amounts to 81 swimming days.
The warmest water in Ansan-si was recorded on August 16, 2024, reaching a 84.2°F. While the coldest temperature occurred on February 16, 2026, dipping to 32.3°F. The average readings by season are 41.9°F in Winter, 49.6°F in Spring, 74.1°F in Summer, and 67.0°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Anyang-si 78.9°F 7mi
Hwaseong-si 78.7°F 8mi
Incheon 81.4°F 11mi
Bucheon-si 81.3°F 12mi
Goyang-si 79.7°F 23mi

* current water temperature in this city

** straight line distance from Ansan-si