Denis Island Sea Temperature

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

Water temperature in Denis Island right now

Below is the current sea temperature for Denis Island, Seychelles on 30th March 2023.

29.38° C

(84.89° F)

  • yesterday: 29.48° C (85.07° F)
  • a week ago: 29.8° C (85.64° F)

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

The average sea temperature for Denis Island on March 30th over the last 10 years is 30.06° C (86.1° F), with a low temperature of 29.23° C (84.61° F) and a high of 30.78° C (87.4° F).

Analysis and forecast for Denis Island water temperatures

The water temperature in Denis Island today is lower than the average temperature of 30.06° C (86.1° F) and the temperature on this day last year, 30th March 2022, was 29.39° C (84.9° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
March 30 29.38° C 84.89° F
March 29 29.48° C 85.07° F
March 28 29.57° C 85.23° F
March 27 29.73° C 85.51° F
March 26 30.26° C 86.47° F
March 25 30.23° C 86.41° F
March 24 30.03° C 86.05° F
March 23 29.8° C 85.64° F
March 22 30.03° C 86.05° F
March 21 30.11° C 86.2° F
March 20 30.07° C 86.13° F
March 19 29.87° C 85.77° F
March 18 29.8° C 85.64° F
March 17 29.81° C 85.66° F
March 16 29.87° C 85.77° F
March 15 29.8° C 85.64° F
March 14 29.9° C 85.82° F
March 13 29.77° C 85.59° F
March 12 29.65° C 85.37° F
March 11 29.63° C 85.33° F
March 10 29.71° C 85.48° F
March 9 29.93° C 85.87° F
March 8 29.56° C 85.21° F
March 7 29.41° C 84.94° F
March 6 29.31° C 84.76° F
March 5 28.67° C 83.61° F
March 4 28.92° C 84.06° F
March 3 28.9° C 84.02° F
March 2 29° C 84.2° F
March 1 29.05° C 84.29° F
February 28 29.09° C 84.36° 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 Denis Island by month

The chart below shows the monthly average water temperature in Denis Island.

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

Denis Island map and nearby water temperatures

The highest temperature in Seychelles today is 29.99° C (85.99° F) in Anse Lazio. The lowest is in Alphonse Island, where the temperature of the water is 29.57° C (85.23° F).

Why measure sea surface temperatures (SST) in Denis Island?

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

  • "Denis Island Sea Temperature". Accessed on March 30, 2023.

  • "Denis Island Sea Temperature"., Accessed 30 March, 2023

  • Denis Island Sea Temperature. Retrieved from