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Average water temperature in San Juan

On this page you find the mean water temperature over the year in San Juan (North Puerto Rico), Puerto Rico. Discover when the water is at its warmest and coolest, perfect for planning your visit.


In San Juan, water temperatures are consistently warm throughout the year. The warmest month is August, with an average water temperature of 29°C.

The coolest month is March, with an average temperature of 26°C. This makes San Juan a year-round destination for swimming and other water-based activities.


Forecast for San Juan

Wed   Dec 18
29°C | 24°C
E 7 m/s
1.7 mm
partly cloudy and rain

partly cloudy and rain

Thu   Dec 19
29°C | 24°C
SE 7 m/s
3.9 mm
broken clouds and rain

broken clouds and rain

Fri   Dec 20
30°C | 24°C
E 7 m/s
1.2 mm
partly cloudy and rain

partly cloudy and rain

Interested in more climate information?

This site provides you with all the information you need about the climate in San Juan.

Our site offers climate and forecast data for every country in the world. Are you going to Puerto Rico? On this website you can find historical weather averages for many cities in Puerto Rico. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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