Kisarazu Sea Temperature

Looking to find out what the sea water temperature in Kisarazu is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Kisarazu and nearby locations.

Water temperature in Kisarazu right now

Below is the current sea temperature for Kisarazu, Japan on January 10, 2026.

Today

Yesterday

A week ago

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a very big risk.

The average sea temperature for Kisarazu on January 10 over the last 10 years is 12.52° C (54.54° F), with a low temperature of 10.97° C (51.75° F) and a high of 14.92° C (58.86° F).

Analysis and forecast for Kisarazu water temperatures

The water temperature in Kisarazu today is the same as the average temperature of 12.52° C (54.54° F) and the temperature on this day last year was 12.52° C (54.54° F).

The chart and table below shows the change in water temperature in Kisarazu over the last 30 days:

DateTemperature (Celsius)Temperature (Fahrenheit)
January 1012.52° C54.54° F
January 912.49° C54.49° F
January 812.58° C54.65° F
January 712.55° C54.59° F
January 612.25° C54.05° F
January 512.08° C53.74° F
January 411.96° C53.54° F
January 312.08° C53.74° F
January 212.24° C54.04° F
January 112.44° C54.4° F
December 3112.68° C54.83° F
December 3012.89° C55.2° F
December 2913.14° C55.65° F
December 2813.26° C55.86° F
December 2713.29° C55.91° F
December 2613.35° C56.04° F
December 2513.38° C56.08° F
December 2413.49° C56.29° F
December 2313.56° C56.41° F
December 2213.67° C56.6° F
December 2113.77° C56.78° F
December 2013.94° C57.08° F
December 1914.09° C57.36° F
December 1814.16° C57.49° F
December 1714.15° C57.46° F
December 1614.24° C57.64° F
December 1514.37° C57.87° F
December 1414.75° C58.55° F
December 1315° C59° F
December 1215.09° C59.16° F

The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.

Water temperature in Kisarazu by month

The chart below shows the monthly average water temperature in Kisarazu.

For more detailed information on how the sea temperature in Kisarazu changes for each month of the year, choose from the months below.

Kisarazu map and nearby water temperatures

Kisarazu sea temperature map

Locations near Kisarazu

Why measure sea surface temperatures (SST) in Kisarazu?

The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Kisarazu because they want to understand and learn how the ocean communicates with the atmosphere of Earth.

SST is one measure that provides information on the global climate, and it can be used to predict the weather in Kisarazu as well as atmospheric model simulations and to study marine ecosystems in the area.

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Kisarazu comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.