Rio Del Mar water temp

This data the coastal Rio Del Mar ocean 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 ocean temperature in Rio Del Mar

Water temperature in Rio Del Mar today is 63°F. Based on our historical data over a period of ten years, the warmest water in this day in Rio Del Mar was recorded in 2014 and was 63.1°F, and the coldest was recorded in 2013 at 55.9°F. Sea water temperature in Rio Del Mar is expected to drop to 59.2°F in the next 10 days. September average water temperature in Rio Del Mar is 59.5°F, the minimum temperature is 55.2°F, and the maximum is 64.8°F.

Throughout the year, the water temperature in Rio Del Mar does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in Rio Del Mar in winter reaches 54.5°F, in spring 54.1°F, in summer the average temperature rises to 57.6°F, and in autumn it is 58.1°F.

Rio Del Mar water temperature now

The ocean salinity in Rio Del Mar is 33.51‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Rio Del Mar 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 Del Mar. 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 Del Mar. Data in table shown for September 27, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Rio Del Mar

Rio Del Mar weather forecast

Current temperature and weather

Data in a table show Rio Del Mar temperature today (September 27, 2025). For more information and forecast for a few days, go to the weather forecast Rio Del Mar.

0-3 h	3-6 h	6-9 h	9-12 h
59°F	57.2°F	58.5°F	59.7°F

12-15 h	15-18 h	18-21 h	21-24 h
60.1°F	60.4°F	60.4°F	60.1°F

Rio Del Mar water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Rio Del Mar. 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 Del Mar 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 Del Mar

The most popular beaches and cities in California with sea temperature today, weather, air temperature and sea state (wave height)

	Water	Weather		Wave
San Diego	64.9°F	68°F		3' 7"
Santa Monica	68.4°F	69.8°F		2' 1"
La Jolla Cove	65.8°F	71.6°F		3' 0"
Lake Tahoe	64.9°F	71.6°F		0' 1"
Los Angeles	67.3°F	64.4°F		3' 7"
Seacliff	63°F	60.8°F		3' 11"
Pleasure Point	62.8°F	60.8°F		3' 11"
Aptos	63°F	60.8°F		3' 11"
Twin Lakes	62.2°F	60.8°F		4' 6"
Seabright Beach	61.9°F	60.8°F		4' 6"

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Our report for Rio Del Mar 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.