Water temperature in Rio Grande (Puerto Rico)

This data the coastal Rio Grande sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Rio Grande

Water temperature in Rio Grande today is 29.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Rio Grande was recorded in 2024 and was 30.4°C, and the coldest was recorded in 2017 at 28.5°C. Sea water temperature in Rio Grande is expected to drop to 29.2°C in the next 10 days. September average water temperature in Rio Grande is 29.3°C, the minimum temperature is 28.3°C, and the maximum is 30.6°C.

The swimming season in Rio Grande lasts from January to December, twelve months per year! During those months, Rio Grande water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Rio Grande in winter reaches 26.9°C, in spring 26.9°C, in summer the average temperature rises to 28.5°C, and in autumn it is 29°C.

Rio Grande water temperature now

The sea salinity in Rio Grande is 36.29‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Rio Grande for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Rio Grande. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Rio Grande. Data in table shown for 28 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Rio Grande

Rio Grande weather forecast

Current temperature and weather

Data in a table show Rio Grande temperature today (28 September 2025). For more information and forecast for a few days, go to the weather forecast Rio Grande.

0-3 h	3-6 h	6-9 h	9-12 h
26°C	25.6°C	26°C	28.4°C

12-15 h	15-18 h	18-21 h	21-24 h
30.5°C	29.9°C	28.5°C	27.2°C

Rio Grande water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Rio Grande. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Rio Grande on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Rio Grande

The nearest beaches and cities from Rio Grande with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Condado Beach	29.7°C	32°C		1.17 m
Escambron Beach	29.7°C	32°C		1.17 m
San Juan	29.7°C	32°C		1.24 m
Bayamn	29.7°C	32°C		1.13 m
Culebra	29.6°C	30°C		1.02 m
Lamboglia	29.9°C	30°C		0.51 m
Palmas	29.9°C	31°C		0.44 m
Arroyo	29.9°C	31°C		0.53 m
Jobos	29.9°C	31°C		0.44 m
Central Aguirre	29.9°C	31°C		0.44 m

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Our report for Rio Grande is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.