Average monthly water temperature in Cayenne, French Guiana
On this page you find the mean water temperature over the year in Cayenne (), French Guiana. Discover when the water is at its warmest and coolest, perfect for planning your visit.
In Cayenne, water remains inviting throughout the year. The warmest month is September, with an average water temperature of 28°C (82°F).
The coolest temperature, January, still averages a pleasant 27°C (81°F). This means you will have a consistently enjoyable environment for water activities and recreation.