San Francisco (CA) water temp

This data the coastal San Francisco 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 San Francisco

Water temperature in San Francisco today is 60.6°F. Based on our historical data over a period of ten years, the warmest water in this day in San Francisco was recorded in 2017 and was 63.1°F, and the coldest was recorded in 2012 at 56.7°F. Sea water temperature in San Francisco is expected to drop to 59°F in the next 10 days. September average water temperature in San Francisco is 59°F, the minimum temperature is 55°F, and the maximum is 64.9°F.

Throughout the year, the water temperature in San Francisco does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in San Francisco in winter reaches 54.3°F, in spring 52.5°F, in summer the average temperature rises to 55.8°F, and in autumn it is 57.7°F.

San Francisco water temperature now

The ocean salinity in San Francisco is 33.34‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in San Francisco 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 San Francisco. 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 San Francisco. Data in table shown for September 13, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in San Francisco

San Francisco weather forecast

Current temperature and weather

Data in a table show San Francisco temperature today (September 13, 2025). For more information and forecast for a few days, go to the weather forecast San Francisco.

0-3 h	3-6 h	6-9 h	9-12 h
59.9°F	59.2°F	59°F	59.9°F

12-15 h	15-18 h	18-21 h	21-24 h
61.3°F	61.9°F	61.7°F	60.3°F

San Francisco water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in San Francisco. 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 San Francisco 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 San Francisco

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	67.8°F	68°F		3' 8"
Santa Monica	70.7°F	73.4°F		2' 5"
La Jolla Cove	68.2°F	73.4°F		3' 2"
Lake Tahoe	65.8°F	62.6°F		0' 1"
Los Angeles	66.4°F	66.2°F		4' 1"
Farallon Islands	60.4°F	68°F		6' 8"
Linda Mar	61°F	62.6°F		5' 9"
Pacifica State Beach	61°F	62.6°F		5' 9"
Pacifica	62.8°F	62.6°F		5' 9"
Montara	60.8°F	62.6°F		5' 10"

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Our report for San Francisco 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.