Eureka Sea Temperature

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

Water temperature in Eureka right now

Below is the current sea temperature for Eureka, United States on 29th March 2024.

9.88° C

(49.79° F)

  • yesterday: 9.83° C (49.7° F)
  • a week ago: 11.97° C (53.55° F)

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

The average sea temperature for Eureka on March 29th over the last 10 years is 10.76° C (51.37° F), with a low temperature of 9.55° C (49.19° F) and a high of 12.39° C (54.3° F).

Analysis and forecast for Eureka water temperatures

The water temperature in Eureka today is lower than the average temperature of 10.76° C (51.37° F) and the temperature on this day last year, 29th March 2023, was 9.68° C (49.42° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
March 29 9.88° C 49.79° F
March 28 9.83° C 49.7° F
March 27 12.14° C 53.85° F
March 26 12.29° C 54.12° F
March 25 12.12° C 53.82° F
March 24 12.16° C 53.89° F
March 23 12.1° C 53.78° F
March 22 11.97° C 53.55° F
March 21 12.05° C 53.69° F
March 20 12.26° C 54.07° F
March 19 12.16° C 53.89° F
March 18 11.86° C 53.35° F
March 17 12.18° C 53.92° F
March 16 12.24° C 54.03° F
March 15 12.3° C 54.14° F
March 14 11.95° C 53.51° F
March 13 11.63° C 52.93° F
March 12 11.51° C 52.72° F
March 11 11.56° C 52.81° F
March 10 11.58° C 52.84° F
March 9 11.52° C 52.74° F
March 8 11.46° C 52.63° F
March 7 11.61° C 52.9° F
March 6 11.72° C 53.1° F
March 5 11.96° C 53.53° F
March 4 12.07° C 53.73° F
March 3 12.22° C 54° F
March 2 12.26° C 54.07° F
March 1 12.21° C 53.98° F
February 29 12.06° C 53.71° F
February 28 11.93° C 53.47° 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 Eureka by month

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

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

Eureka map and nearby water temperatures

Locations near Eureka

The highest temperature in United States today is 25.44° C (77.8° F) in Boynton Beach. The lowest is in Nome, where the temperature of the water is -1.4° C (29.49° F).

Why measure sea surface temperatures (SST) in Eureka?

The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Eureka 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 Eureka 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 Eureka 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.

  • "Eureka Sea Temperature". SeaTemperatures.net. Accessed on March 29, 2024. http://seatemperatures.net/north-america/united-states/eureka/.

  • "Eureka Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/north-america/united-states/eureka/. Accessed 29 March, 2024

  • Eureka Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/united-states/eureka/.