St. Augustine Beach water temp
This data the coastal St. Augustine Beach 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 St. Augustine Beach
Water temperature in St. Augustine Beach today is 80.6°F. Based on our historical data over a period of ten years, the warmest water in this day in St. Augustine Beach was recorded in 2018 and was 84.2°F, and the coldest was recorded in 2022 at 77°F. Sea water temperature in St. Augustine Beach is expected to drop to 79.3°F in the next 10 days. October average water temperature in St. Augustine Beach is 78.4°F, the minimum temperature is 71.4°F, and the maximum is 84.2°F.
The swimming season in St. Augustine Beach lasts from April to November. During those months, St. Augustine Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in St. Augustine Beach in winter reaches 64.6°F, in spring 70.3°F, in summer the average temperature rises to 81.5°F, and in autumn it is 77.5°F.
St. Augustine Beach water temperature now
| October 3, 2025 |
|---|
| today temp |
| 80.6°F |
| October 2, 2025 |
|---|
| yesterday temp |
| 81.3°F |
The ocean salinity in St. Augustine Beach is 35.82‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in St. Augustine Beach 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 St. Augustine Beach. 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 St. Augustine Beach. Data in table shown for October 3, 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 |
|---|---|---|---|
| 5' 10" | 5' 9" | 5' 7" | 5' 8" |
| 1.78 m | 1.75 m | 1.71 m | 1.73 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 5' 10" | 5' 8" | 5' 8" | 5' 10" |
| 1.77 m | 1.73 m | 1.73 m | 1.77 m |
Surf report in St. Augustine Beach
St. Augustine Beach weather forecast
Current temperature and weather
Data in a table show St. Augustine Beach temperature today (October 3, 2025). For more information and forecast for a few days, go to the weather forecast St. Augustine Beach.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  | | |
| 74.1°F | 74.5°F | 75°F | 77.5°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 |  | |  |
| 79.5°F | 80.6°F | 78.6°F | 78.1°F |
You may also be interested in other sections of our site for St. Augustine Beach: Sunrise and Sunset, Tides
St. Augustine Beach water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in St. Augustine Beach. 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 St. Augustine Beach 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 St. Augustine Beach
