Sonoma Coast water temp
This data the coastal Sonoma Coast 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 Sonoma Coast
Water temperature in Sonoma Coast today is 57.9°F. Based on our historical data over a period of ten years, the warmest water in this day in Sonoma Coast was recorded in 2015 and was 61.9°F, and the coldest was recorded in 2022 at 50.4°F. Sea water temperature in Sonoma Coast is expected to drop to 55.4°F in the next 10 days. October average water temperature in Sonoma Coast is 55.2°F, the minimum temperature is 47.8°F, and the maximum is 62.2°F.
Throughout the year, the water temperature in Sonoma Coast does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in Sonoma Coast in winter reaches 52.9°F, in spring 50.9°F, in summer the average temperature rises to 53.1°F, and in autumn it is 55.2°F.
Sonoma Coast water temperature now
| October 16, 2025 |
|---|
| today temp |
| 57.9°F |
| October 15, 2025 |
|---|
| yesterday temp |
| 57.9°F |
The ocean salinity in Sonoma Coast is 33.30‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Sonoma Coast 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 Sonoma Coast. 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 Sonoma Coast. Data in table shown for October 17, 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' 2" | 4' 0" | 3' 10" | 3' 10" |
| 1.26 m | 1.22 m | 1.18 m | 1.17 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 3' 11" | 4' 0" | 4' 3" | 4' 9" |
| 1.19 m | 1.21 m | 1.29 m | 1.45 m |
Surf report in Sonoma Coast
Sonoma Coast weather forecast
Current temperature and weather
Data in a table show Sonoma Coast temperature today (October 17, 2025). For more information and forecast for a few days, go to the weather forecast Sonoma Coast.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 54°F | 52.7°F | 52°F | 55.4°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 |  | | |
| 57°F | 58.3°F | 55.6°F | 54.1°F |
You may also be interested in other sections of our site for Sonoma Coast: Sunrise and Sunset, Tides
Sonoma Coast water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Sonoma Coast. 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 Sonoma Coast 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 | 52.7°F | 49.8°F | 57°F | cold |
| Ocean water temperature in Sonoma Coast in January | ||||
| February | 52.5°F | 47.8°F | 57°F | cold |
| Ocean water temperature in Sonoma Coast in February | ||||
| March | 52°F | 47.3°F | 55.9°F | cold |
| Ocean water temperature in Sonoma Coast in March | ||||
| April | 50.7°F | 46°F | 56.1°F | cold |
| Ocean water temperature in Sonoma Coast in April | ||||
| May | 50.2°F | 44.8°F | 56.7°F | cold |
| Ocean water temperature in Sonoma Coast in May | ||||
| June | 51.3°F | 45.9°F | 59°F | cold |
| Ocean water temperature in Sonoma Coast in June | ||||
| July | 53.1°F | 46°F | 61°F | cold |
| Ocean water temperature in Sonoma Coast in July | ||||
| August | 54.9°F | 47.8°F | 61.9°F | cold |
| Ocean water temperature in Sonoma Coast in August | ||||
| September | 56.1°F | 50.4°F | 64.4°F | cold |
| Ocean water temperature in Sonoma Coast in September | ||||
| October | 55.2°F | 47.8°F | 62.2°F | cold |
| Ocean water temperature in Sonoma Coast in October | ||||
| November | 54.3°F | 50.4°F | 59.5°F | cold |
| Ocean water temperature in Sonoma Coast in November | ||||
| December | 53.4°F | 50°F | 59.7°F | cold |
| Ocean water temperature in Sonoma Coast in December | ||||
Chart monthly average water temperature in Sonoma Coast
