Cayenne Sea Temperature

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

Water temperature in Cayenne right now

Below is the current sea temperature for Cayenne, French Guiana on 26th September 2023.

27.81° C

(82.06° F)

  • yesterday: 27.98° C (82.36° F)
  • a week ago: 28.96° C (84.13° 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 Cayenne on September 26th over the last 10 years is 28.44° C (83.2° F), with a low temperature of 27.11° C (80.8° F) and a high of 29.98° C (85.96° F).

Analysis and forecast for Cayenne water temperatures

The water temperature in Cayenne today is lower than the average temperature of 28.44° C (83.2° F) and the temperature on this day last year, 26th September 2022, was 27.8° C (82.04° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
September 26 27.81° C 82.06° F
September 25 27.98° C 82.36° F
September 24 29.85° C 85.73° F
September 23 29.84° C 85.71° F
September 22 29.32° C 84.78° F
September 21 29.19° C 84.54° F
September 20 29.18° C 84.52° F
September 19 28.96° C 84.13° F
September 18 28.62° C 83.52° F
September 17 28.52° C 83.34° F
September 16 28.58° C 83.44° F
September 15 28.53° C 83.35° F
September 14 28.18° C 82.72° F
September 13 28.04° C 82.47° F
September 12 28.26° C 82.87° F
September 11 28.33° C 82.99° F
September 10 28.55° C 83.39° F
September 9 28.66° C 83.59° F
September 8 28.61° C 83.5° F
September 7 28.7° C 83.66° F
September 6 28.88° C 83.98° F
September 5 28.83° C 83.89° F
September 4 28.75° C 83.75° F
September 3 28.97° C 84.15° F
September 2 29.15° C 84.47° F
September 1 29.4° C 84.92° F
August 31 29.49° C 85.08° F
August 30 29.52° C 85.14° F
August 29 29.39° C 84.9° F
August 28 29.25° C 84.65° F
August 27 29.13° C 84.43° 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 Cayenne by month

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

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

Cayenne map and nearby water temperatures

Locations near Cayenne

The highest temperature in French Guiana today is 29.06° C (84.31° F) in Mana. The lowest is in Cayenne, where the temperature of the water is 28.72° C (83.69° F).

Why measure sea surface temperatures (SST) in Cayenne?

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

  • "Cayenne Sea Temperature". Accessed on September 26, 2023.

  • "Cayenne Sea Temperature"., Accessed 26 September, 2023

  • Cayenne Sea Temperature. Retrieved from