San Simeon water temp
This data the coastal San Simeon 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 Simeon
Water temperature in San Simeon today is 59.4°F. Based on our historical data over a period of ten years, the warmest water in this day in San Simeon was recorded in 2014 and was 62.4°F, and the coldest was recorded in 2010 at 55.8°F. Sea water temperature in San Simeon is expected to drop to 59.2°F in the next 10 days. September average water temperature in San Simeon is 59.2°F, the minimum temperature is 53.4°F, and the maximum is 67.6°F.
Throughout the year, the water temperature in San Simeon does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in San Simeon in winter reaches 55.8°F, in spring 53.1°F, in summer the average temperature rises to 56.5°F, and in autumn it is 58.5°F.
San Simeon water temperature now
| September 5, 2025 |
|---|
| today temp |
| 59.4°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 61.2°F |
The ocean salinity in San Simeon is 33.64‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in San Simeon 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 Simeon. 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 Simeon. 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 |
|---|---|---|---|
| 4' 11" | 5' 1" | 4' 11" | 4' 8" |
| 1.49 m | 1.55 m | 1.5 m | 1.43 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 4' 7" | 4' 6" | 4' 4" | 4' 4" |
| 1.4 m | 1.36 m | 1.33 m | 1.33 m |
Surf report in San Simeon
San Simeon weather forecast
Current temperature and weather
Data in a table show San Simeon temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast San Simeon.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | |  |  |
| 58.8°F | 59.7°F | 59°F | 70.2°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | |  |
| 77.9°F | 75.7°F | 68.2°F | 57.9°F |
You may also be interested in other sections of our site for San Simeon: Sunrise and Sunset, Tides
San Simeon water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in San Simeon. 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 Simeon 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 | 55.4°F | 52°F | 60.3°F | cold |
| Ocean water temperature in San Simeon in January | ||||
| February | 55°F | 51.1°F | 60.3°F | cold |
| Ocean water temperature in San Simeon in February | ||||
| March | 54°F | 50.4°F | 59.4°F | cold |
| Ocean water temperature in San Simeon in March | ||||
| April | 52.5°F | 49.1°F | 57.2°F | cold |
| Ocean water temperature in San Simeon in April | ||||
| May | 52.9°F | 49.5°F | 56.7°F | cold |
| Ocean water temperature in San Simeon in May | ||||
| June | 54.5°F | 48.7°F | 59°F | cold |
| Ocean water temperature in San Simeon in June | ||||
| July | 56.5°F | 49.6°F | 64.4°F | cold |
| Ocean water temperature in San Simeon in July | ||||
| August | 58.3°F | 51.1°F | 64.8°F | cold |
| Ocean water temperature in San Simeon in August | ||||
| September | 59.2°F | 53.4°F | 67.6°F | cold |
| Ocean water temperature in San Simeon in September | ||||
| October | 58.8°F | 53.6°F | 66.4°F | cold |
| Ocean water temperature in San Simeon in October | ||||
| November | 57.6°F | 51.8°F | 63.5°F | cold |
| Ocean water temperature in San Simeon in November | ||||
| December | 56.7°F | 52.7°F | 63°F | cold |
| Ocean water temperature in San Simeon in December | ||||
Chart monthly average water temperature in San Simeon
