Average monthly water temperature in Rio Grande, Puerto Rico
On this page you find the mean water temperature over the year in Rio Grande (), Puerto Rico. Discover when the water is at its warmest and coolest, perfect for planning your visit.
In Rio Grande, water remains inviting throughout the year. The warmest month is August, with an average water temperature of 29°C (84°F).
The coolest temperature, January, still averages a pleasant 26°C (79°F). This means you will have a consistently enjoyable environment for water activities and recreation.
Rio Grande Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rio Grande - and find the best time to visit.
Rio Grande 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Rio Grande climate overview or explore weather in Puerto Rico.
Popular this month
Where to go in August - average daytime high across popular destinations.
San Juan
31°C (88°F) Rio Grande
31°C (88°F) Aguada
30°C (86°F) Rincon30°C (86°F) Luquillo30°C (86°F) Culebra30°C (86°F) Vieques30°C (86°F) Fajardo
30°C (86°F) 
