Joetsu Sea Temperature

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

Water temperature in Joetsu right now

Below is the current sea temperature for Joetsu, Japan on 10th May 2024.

14.85° C

(58.72° F)

  • yesterday: 14.74° C (58.53° F)
  • a week ago: 14.77° C (58.59° F)

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 Joetsu on May 10th over the last 10 years is 13.78° C (56.81° F), with a low temperature of 12.27° C (54.09° F) and a high of 15.03° C (59.05° F).

Analysis and forecast for Joetsu water temperatures

The water temperature in Joetsu today is higher than the average temperature of 13.78° C (56.81° F) and the temperature on this day last year, 10th May 2023, was 14.81° C (58.66° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
May 10 14.85° C 58.72° F
May 9 14.74° C 58.53° F
May 8 15.11° C 59.2° F
May 7 15.52° C 59.94° F
May 6 15.5° C 59.9° F
May 5 15.49° C 59.88° F
May 4 15.49° C 59.88° F
May 3 14.77° C 58.59° F
May 2 14.33° C 57.79° F
May 1 14.34° C 57.81° F
April 30 15.64° C 60.15° F
April 29 15.63° C 60.13° F
April 28 15.59° C 60.06° F
April 27 14.87° C 58.77° F
April 26 13.87° C 56.97° F
April 25 13.73° C 56.71° F
April 24 13.69° C 56.64° F
April 23 13.64° C 56.55° F
April 22 13.58° C 56.44° F
April 21 13.52° C 56.34° F
April 20 13.55° C 56.39° F
April 19 13.31° C 55.96° F
April 18 13.19° C 55.74° F
April 17 13.13° C 55.63° F
April 16 13.42° C 56.16° F
April 15 13.08° C 55.54° F
April 14 13.26° C 55.87° F
April 13 12.79° C 55.02° F
April 12 12.7° C 54.86° F
April 11 12.32° C 54.18° F
April 10 12.03° C 53.65° 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 Joetsu by month

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

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

January February March April May June July August September October November December

Joetsu map and nearby water temperatures

Locations near Joetsu

Kashiwazaki

Japan, Asia

23.56 miles away

The highest temperature in Japan today is 26.51° C (79.71° F) in Yonakuni. The lowest is in Mombetsu, where the temperature of the water is 4.77° C (40.58° F).

Why measure sea surface temperatures (SST) in Joetsu?

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

SST is one measure that provides information on the global climate, and it can be used to predict the weather in Joetsu 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 Joetsu 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.

  • "Joetsu Sea Temperature". SeaTemperatures.net. Accessed on May 10, 2024. http://seatemperatures.net/asia/japan/joetsu/.

  • "Joetsu Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/asia/japan/joetsu/. Accessed 10 May, 2024

  • Joetsu Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/asia/japan/joetsu/.