Delaware City water temp
This data the coastal Delaware City 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 Delaware City
Water temperature in Delaware City today is 74.7°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Delaware City was recorded in 2018 and was 80.6°F, and the coldest was recorded in 2017 at 73.9°F. Sea water temperature in Delaware City is expected to drop to 73.9°F in the next 10 days. September average water temperature in Delaware City is 73.8°F, the minimum temperature is 67.1°F, and the maximum is 81.7°F.
The swimming season in Delaware City lasts from June to September. During those months, Delaware City water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Delaware City in winter reaches 39°F, in spring 51.8°F, in summer the average temperature rises to 76.5°F, and in autumn it is 63.7°F.
Delaware City water temperature now
| September 5, 2025 |
|---|
| today temp |
| 74.7°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 74.7°F |
The ocean salinity in Delaware City is 26.87‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Delaware City 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 Delaware City. 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 Delaware City. 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 |
|---|---|---|---|
| 1' 2" | 0' 9" | 0' 7" | 0' 5" |
| 0.35 m | 0.24 m | 0.17 m | 0.13 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 0' 4" | 0' 4" | 0' 9" | 0' 9" |
| 0.1 m | 0.09 m | 0.22 m | 0.23 m |
Surf report in Delaware City
Delaware City weather forecast
Current temperature and weather
Data in a table show Delaware City temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Delaware City.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  | |  |
| 68.2°F | 65.7°F | 64.8°F | 68.2°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | | |  |
| 85.3°F | 92.3°F | 86.7°F | 78.8°F |
You may also be interested in other sections of our site for Delaware City: Sunrise and Sunset, Tides
Delaware City water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Delaware City. 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 Delaware City 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 | 37.4°F | 31.8°F | 44.4°F | cold |
| Ocean water temperature in Delaware City in January | ||||
| February | 36.5°F | 29.3°F | 45.5°F | cold |
| Ocean water temperature in Delaware City in February | ||||
| March | 42.6°F | 32°F | 53.2°F | cold |
| Ocean water temperature in Delaware City in March | ||||
| April | 52.2°F | 42.4°F | 62.4°F | cold |
| Ocean water temperature in Delaware City in April | ||||
| May | 60.8°F | 48.4°F | 72.7°F | cold |
| Ocean water temperature in Delaware City in May | ||||
| June | 72.3°F | 63.5°F | 81.3°F | warm |
| Ocean water temperature in Delaware City in June | ||||
| July | 78.8°F | 72.1°F | 86.5°F | hot |
| Ocean water temperature in Delaware City in July | ||||
| August | 78.4°F | 72.3°F | 86.2°F | hot |
| Ocean water temperature in Delaware City in August | ||||
| September | 73.8°F | 67.1°F | 81.7°F | warm |
| Ocean water temperature in Delaware City in September | ||||
| October | 64.4°F | 54.5°F | 74.7°F | cold |
| Ocean water temperature in Delaware City in October | ||||
| November | 53.1°F | 43°F | 62.6°F | cold |
| Ocean water temperature in Delaware City in November | ||||
| December | 43.2°F | 34.9°F | 52°F | cold |
| Ocean water temperature in Delaware City in December | ||||
Chart monthly average water temperature in Delaware City
