Chesapeake Bay water temp
This data the coastal Chesapeake Bay 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 Chesapeake Bay
Water temperature in Chesapeake Bay today is 75°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Chesapeake Bay was recorded in 2018 and was 77.5°F, and the coldest was recorded in 2020 at 68.4°F. Sea water temperature in Chesapeake Bay is expected to drop to 71.1°F in the next 10 days. September average water temperature in Chesapeake Bay is 76.5°F, the minimum temperature is 68.4°F, and the maximum is 85.1°F.
The swimming season in Chesapeake Bay lasts from June to October. During those months, Chesapeake Bay water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Chesapeake Bay in winter reaches 43.3°F, in spring 55.2°F, in summer the average temperature rises to 79.2°F, and in autumn it is 66.9°F.
Chesapeake Bay water temperature now
| September 26, 2025 |
|---|
| today temp |
| 75°F |
| September 25, 2025 |
|---|
| yesterday temp |
| 73.4°F |
The ocean salinity in Chesapeake Bay is 0.24‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Chesapeake Bay 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 Chesapeake Bay. 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 Chesapeake Bay. 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 |
|---|---|---|---|
| 0' 10" | 1' 2" | 1' 4" | 1' 1" |
| 0.25 m | 0.36 m | 0.4 m | 0.34 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 0' 9" | 0' 6" | 0' 5" | 0' 4" |
| 0.24 m | 0.16 m | 0.13 m | 0.11 m |
Surf report in Chesapeake Bay
Chesapeake Bay weather forecast
Current temperature and weather
Data in a table show Chesapeake Bay temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Chesapeake Bay.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | |  |  |
| 73.8°F | 73°F | 72.5°F | 75.9°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | |  | |
| 78.3°F | 79°F | 76.1°F | 73.4°F |
You may also be interested in other sections of our site for Chesapeake Bay: Sunrise and Sunset, Tides
Chesapeake Bay water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Chesapeake Bay. 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 Chesapeake Bay 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 | 41.9°F | 33.1°F | 52.9°F | cold |
| Ocean water temperature in Chesapeake Bay in January | ||||
| February | 40.6°F | 32.4°F | 49.1°F | cold |
| Ocean water temperature in Chesapeake Bay in February | ||||
| March | 45.5°F | 33.1°F | 58.3°F | cold |
| Ocean water temperature in Chesapeake Bay in March | ||||
| April | 54.9°F | 44.4°F | 65.3°F | cold |
| Ocean water temperature in Chesapeake Bay in April | ||||
| May | 65.5°F | 55.9°F | 77.5°F | cold |
| Ocean water temperature in Chesapeake Bay in May | ||||
| June | 75.4°F | 67.1°F | 85.8°F | warm |
| Ocean water temperature in Chesapeake Bay in June | ||||
| July | 81.3°F | 74.8°F | 86.5°F | hot |
| Ocean water temperature in Chesapeake Bay in July | ||||
| August | 80.8°F | 76.3°F | 85.8°F | hot |
| Ocean water temperature in Chesapeake Bay in August | ||||
| September | 76.5°F | 68.4°F | 85.1°F | warm |
| Ocean water temperature in Chesapeake Bay in September | ||||
| October | 67.6°F | 56.8°F | 77.5°F | cold |
| Ocean water temperature in Chesapeake Bay in October | ||||
| November | 56.5°F | 46.8°F | 66°F | cold |
| Ocean water temperature in Chesapeake Bay in November | ||||
| December | 47.5°F | 37.8°F | 55.4°F | cold |
| Ocean water temperature in Chesapeake Bay in December | ||||
Chart monthly average water temperature in Chesapeake Bay
