Hercules water temp
This data the coastal Hercules 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 Hercules
Water temperature in Hercules today is 67.8°F. Based on our historical data over a period of ten years, the warmest water in this day in Hercules was recorded in 2019 and was 68.2°F, and the coldest was recorded in 2012 at 56.3°F. Sea water temperature in Hercules is expected to drop to 61.3°F in the next 10 days. September average water temperature in Hercules is 62.2°F, the minimum temperature is 55.4°F, and the maximum is 71.1°F.
The swimming season in Hercules lasts only one month - September. During this month, Hercules water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Hercules in winter reaches 52.5°F, in spring 55.9°F, in summer the average temperature rises to 60.8°F, and in autumn it is 60.1°F.
Hercules water temperature now
| September 26, 2025 |
|---|
| today temp |
| 67.8°F |
| September 25, 2025 |
|---|
| yesterday temp |
| 68.4°F |
The ocean salinity in Hercules is 21.45‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Hercules 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 Hercules. 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 Hercules. Data in table shown for September 26, 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 |
|---|---|---|---|
| 1' 2" | 1' 1" | 1' 3" | 1' 5" |
| 0.35 m | 0.33 m | 0.37 m | 0.43 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 1' 6" | 1' 7" | 1' 7" | 1' 7" |
| 0.45 m | 0.47 m | 0.47 m | 0.48 m |
Surf report in Hercules
Hercules weather forecast
Current temperature and weather
Data in a table show Hercules temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Hercules.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  |  |  |
| 59°F | 57.2°F | 56.5°F | 67.8°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 72.7°F | 74.8°F | 68.9°F | 61.9°F |
You may also be interested in other sections of our site for Hercules: Sunrise and Sunset, Tides
Hercules water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Hercules. 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 Hercules 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 | 51.4°F | 48.9°F | 55°F | cold |
| Ocean water temperature in Hercules in January | ||||
| February | 52.7°F | 49.5°F | 57.7°F | cold |
| Ocean water temperature in Hercules in February | ||||
| March | 54.5°F | 49.3°F | 59°F | cold |
| Ocean water temperature in Hercules in March | ||||
| April | 56.3°F | 50.9°F | 65.7°F | cold |
| Ocean water temperature in Hercules in April | ||||
| May | 57°F | 50.2°F | 69.1°F | cold |
| Ocean water temperature in Hercules in May | ||||
| June | 59.2°F | 51.4°F | 68.7°F | cold |
| Ocean water temperature in Hercules in June | ||||
| July | 61°F | 53.1°F | 70°F | cold |
| Ocean water temperature in Hercules in July | ||||
| August | 62.1°F | 54.3°F | 71.2°F | cold |
| Ocean water temperature in Hercules in August | ||||
| September | 62.2°F | 55.4°F | 71.1°F | cold |
| Ocean water temperature in Hercules in September | ||||
| October | 60.6°F | 54.3°F | 68.2°F | cold |
| Ocean water temperature in Hercules in October | ||||
| November | 57.4°F | 52.5°F | 62.6°F | cold |
| Ocean water temperature in Hercules in November | ||||
| December | 53.2°F | 49.1°F | 58.5°F | cold |
| Ocean water temperature in Hercules in December | ||||
Chart monthly average water temperature in Hercules
