Bethany Beach water temp
This data the coastal Bethany 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 Bethany Beach
Water temperature in Bethany Beach today is 72.3°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Bethany Beach was recorded in 2023 and was 77.4°F, and the coldest was recorded in 2009 at 70.2°F. Sea water temperature in Bethany Beach is expected to drop to 71.6°F in the next 10 days. September average water temperature in Bethany Beach is 72.9°F, the minimum temperature is 66.9°F, and the maximum is 80.6°F.
The swimming season in Bethany Beach lasts from June to October. During those months, Bethany Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Bethany Beach in winter reaches 44.2°F, in spring 50.4°F, in summer the average temperature rises to 72.5°F, and in autumn it is 65.5°F.
Bethany Beach water temperature now
| September 13, 2025 |
|---|
| today temp |
| 72.3°F |
| September 12, 2025 |
|---|
| yesterday temp |
| 71.8°F |
The ocean salinity in Bethany Beach is 30.61‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Bethany 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 Bethany 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 Bethany Beach. Data in table shown for September 13, 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 |
|---|---|---|---|
| 2' 4" | 2' 5" | 2' 6" | 2' 6" |
| 0.72 m | 0.74 m | 0.75 m | 0.75 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 2' 6" | 2' 6" | 2' 6" | 2' 7" |
| 0.76 m | 0.76 m | 0.77 m | 0.79 m |
Surf report in Bethany Beach
Bethany Beach weather forecast
Current temperature and weather
Data in a table show Bethany Beach temperature today (September 13, 2025). For more information and forecast for a few days, go to the weather forecast Bethany Beach.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | | |
| 65.8°F | 65.5°F | 64.9°F | 65.3°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
|  |  | |
| 66.6°F | 67.6°F | 64.6°F | 63.3°F |
You may also be interested in other sections of our site for Bethany Beach: Sunrise and Sunset, Tides
Bethany Beach water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Bethany 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 Bethany 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
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 43.2°F | 34.7°F | 52°F | cold |
| Ocean water temperature in Bethany Beach in January | ||||
| February | 40.8°F | 32.5°F | 46.4°F | cold |
| Ocean water temperature in Bethany Beach in February | ||||
| March | 43.3°F | 33.1°F | 53.1°F | cold |
| Ocean water temperature in Bethany Beach in March | ||||
| April | 49.5°F | 40.8°F | 58.1°F | cold |
| Ocean water temperature in Bethany Beach in April | ||||
| May | 58.5°F | 49.6°F | 71.1°F | cold |
| Ocean water temperature in Bethany Beach in May | ||||
| June | 68.2°F | 59.5°F | 77.7°F | warm |
| Ocean water temperature in Bethany Beach in June | ||||
| July | 74.5°F | 63.7°F | 80.6°F | warm |
| Ocean water temperature in Bethany Beach in July | ||||
| August | 75°F | 65.5°F | 80.2°F | warm |
| Ocean water temperature in Bethany Beach in August | ||||
| September | 72.9°F | 66.9°F | 80.6°F | warm |
| Ocean water temperature in Bethany Beach in September | ||||
| October | 66.2°F | 57.6°F | 74.8°F | cold |
| Ocean water temperature in Bethany Beach in October | ||||
| November | 57.2°F | 49.6°F | 65.1°F | cold |
| Ocean water temperature in Bethany Beach in November | ||||
| December | 48.9°F | 40.1°F | 56.5°F | cold |
| Ocean water temperature in Bethany Beach in December | ||||
Chart monthly average water temperature in Bethany Beach
