Imperial Beach water temp
This data the coastal Imperial 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 Imperial Beach
Water temperature in Imperial Beach today is 66.6°F. Based on our historical data over a period of ten years, the warmest water in this day in Imperial Beach was recorded in 2015 and was 74.7°F, and the coldest was recorded in 2010 at 63.7°F. Sea water temperature in Imperial Beach is expected to rise to 67.1°F in the next 10 days. September average water temperature in Imperial Beach is 68.2°F, the minimum temperature is 62.2°F, and the maximum is 75.4°F.
The swimming season in Imperial Beach lasts from July to October. During those months, Imperial Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Imperial Beach in winter reaches 59.2°F, in spring 60.6°F, in summer the average temperature rises to 67.5°F, and in autumn it is 65.7°F.
Imperial Beach water temperature now
| September 21, 2025 |
|---|
| today temp |
| 66.6°F |
| September 20, 2025 |
|---|
| yesterday temp |
| 67.3°F |
The ocean salinity in Imperial Beach is 32.54‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Imperial 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 Imperial 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 Imperial Beach. Data in table shown for September 21, 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' 8" | 2' 8" | 2' 8" | 2' 7" |
| 0.81 m | 0.81 m | 0.81 m | 0.8 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 2' 7" | 2' 6" | 2' 6" | 2' 7" |
| 0.78 m | 0.77 m | 0.76 m | 0.79 m |
Surf report in Imperial Beach
Imperial Beach weather forecast
Current temperature and weather
Data in a table show Imperial Beach temperature today (September 21, 2025). For more information and forecast for a few days, go to the weather forecast Imperial Beach.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  | |  |
| 67.6°F | 67.5°F | 67.5°F | 68.9°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 70.7°F | 72.7°F | 72.9°F | 70.9°F |
You may also be interested in other sections of our site for Imperial Beach: Sunrise and Sunset, Tides
Imperial Beach water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Imperial 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 Imperial 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 | 58.6°F | 55.2°F | 62.1°F | cold |
| Ocean water temperature in Imperial Beach in January | ||||
| February | 58.5°F | 54.7°F | 62.6°F | cold |
| Ocean water temperature in Imperial Beach in February | ||||
| March | 59°F | 55.2°F | 65.3°F | cold |
| Ocean water temperature in Imperial Beach in March | ||||
| April | 60.1°F | 53.8°F | 65.3°F | cold |
| Ocean water temperature in Imperial Beach in April | ||||
| May | 62.6°F | 57.2°F | 67.8°F | cold |
| Ocean water temperature in Imperial Beach in May | ||||
| June | 65.1°F | 60.6°F | 70.3°F | cold |
| Ocean water temperature in Imperial Beach in June | ||||
| July | 68°F | 61°F | 74.7°F | warm |
| Ocean water temperature in Imperial Beach in July | ||||
| August | 69.3°F | 60.4°F | 76.3°F | warm |
| Ocean water temperature in Imperial Beach in August | ||||
| September | 68.2°F | 62.2°F | 75.4°F | warm |
| Ocean water temperature in Imperial Beach in September | ||||
| October | 66°F | 60.1°F | 73.4°F | cold |
| Ocean water temperature in Imperial Beach in October | ||||
| November | 62.6°F | 56.5°F | 70°F | cold |
| Ocean water temperature in Imperial Beach in November | ||||
| December | 60.3°F | 55.2°F | 65.5°F | cold |
| Ocean water temperature in Imperial Beach in December | ||||
Chart monthly average water temperature in Imperial Beach
