San Clemente water temp
This data the coastal San Clemente 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 Clemente
Water temperature in San Clemente today is 70°F. Based on our historical data over a period of ten years, the warmest water in this day in San Clemente was recorded in 2019 and was 74.8°F, and the coldest was recorded in 2011 at 64.8°F. Sea water temperature in San Clemente is expected to be constant 70°F in the next 10 days. September average water temperature in San Clemente is 69.8°F, the minimum temperature is 63.3°F, and the maximum is 76.1°F.
The swimming season in San Clemente lasts from July to October. During those months, San Clemente water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in San Clemente in winter reaches 59.5°F, in spring 60.8°F, in summer the average temperature rises to 68.7°F, and in autumn it is 66.9°F.
San Clemente water temperature now
| September 5, 2025 |
|---|
| today temp |
| 70°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 69.8°F |
The ocean salinity in San Clemente is 32.94‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in San Clemente 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 Clemente. 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 Clemente. Data in table shown for September 5, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 3' 3" | 3' 4" | 3' 3" | 3' 4" |
| 1 m | 1.01 m | 1 m | 1.01 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 3' 4" | 3' 4" | 3' 4" | 3' 6" |
| 1.02 m | 1.02 m | 1.02 m | 1.06 m |
Surf report in San Clemente
San Clemente weather forecast
Current temperature and weather
Data in a table show San Clemente temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast San Clemente.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 67.8°F | 66.7°F | 65.5°F | 73.8°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | |  |
| 78.8°F | 79.3°F | 72.9°F | 66.7°F |
You may also be interested in other sections of our site for San Clemente: Sunrise and Sunset, Tides
San Clemente water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in San Clemente. 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 Clemente 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
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 59°F | 55.9°F | 62.4°F | cold |
| Ocean water temperature in San Clemente in January | ||||
| February | 58.6°F | 54.9°F | 63°F | cold |
| Ocean water temperature in San Clemente in February | ||||
| March | 59°F | 54.5°F | 66°F | cold |
| Ocean water temperature in San Clemente in March | ||||
| April | 60.3°F | 54.5°F | 65.3°F | cold |
| Ocean water temperature in San Clemente in April | ||||
| May | 63.3°F | 57.9°F | 68.5°F | cold |
| Ocean water temperature in San Clemente in May | ||||
| June | 66°F | 60.3°F | 72.1°F | cold |
| Ocean water temperature in San Clemente in June | ||||
| July | 69.6°F | 64°F | 75.7°F | warm |
| Ocean water temperature in San Clemente in July | ||||
| August | 70.5°F | 62.4°F | 77.2°F | warm |
| Ocean water temperature in San Clemente in August | ||||
| September | 69.8°F | 63.3°F | 76.1°F | warm |
| Ocean water temperature in San Clemente in September | ||||
| October | 67.3°F | 62.6°F | 74.7°F | cold |
| Ocean water temperature in San Clemente in October | ||||
| November | 63.7°F | 57.6°F | 70.5°F | cold |
| Ocean water temperature in San Clemente in November | ||||
| December | 60.8°F | 57.4°F | 65.5°F | cold |
| Ocean water temperature in San Clemente in December | ||||
Chart monthly average water temperature in San Clemente
