Long Beach (Long Island) water temp
This data the coastal Long Beach sea 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 sea temperature in Long Beach
Water temperature in Long Beach today is 69.3°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Long Beach was recorded in 2021 and was 72°F, and the coldest was recorded in 2008 at 66°F. Sea water temperature in Long Beach is expected to drop to 66.7°F in the next 10 days. September average water temperature in Long Beach is 70.9°F, the minimum temperature is 64.9°F, and the maximum is 77°F.
The swimming season in Long Beach lasts from July to September. During those months, Long Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Long Beach in winter reaches 43.9°F, in spring 47.5°F, in summer the average temperature rises to 70.7°F, and in autumn it is 63.5°F.
Long Beach water temperature now
| September 26, 2025 |
|---|
| today temp |
| 69.3°F |
| September 25, 2025 |
|---|
| yesterday temp |
| 69.6°F |
The sea salinity in Long Beach is 29.63‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Long 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 Long 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 Long Beach. 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 |
|---|---|---|---|
| 3' 2" | 3' 3" | 3' 1" | 2' 9" |
| 0.96 m | 0.98 m | 0.93 m | 0.83 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 2' 6" | 2' 4" | 2' 3" | 2' 3" |
| 0.76 m | 0.72 m | 0.69 m | 0.68 m |
Surf report in Long Beach
Long Beach weather forecast
Current temperature and weather
Data in a table show Long Beach temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Long Beach.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 71.2°F | 68.5°F | 66.6°F | 70.7°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | | | |
| 77°F | 82.9°F | 79.5°F | 74.7°F |
You may also be interested in other sections of our site for Long Beach: Sunrise and Sunset, Tides
Long Beach water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Long 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 Long 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 | 37.4°F | 50.4°F | cold |
| Sea water temperature in Long Beach in January | ||||
| February | 39.9°F | 35.1°F | 45.1°F | cold |
| Sea water temperature in Long Beach in February | ||||
| March | 41.4°F | 36.1°F | 50.7°F | cold |
| Sea water temperature in Long Beach in March | ||||
| April | 46.4°F | 39°F | 53.8°F | cold |
| Sea water temperature in Long Beach in April | ||||
| May | 54.9°F | 47.3°F | 66.4°F | cold |
| Sea water temperature in Long Beach in May | ||||
| June | 65.1°F | 56.7°F | 74.1°F | cold |
| Sea water temperature in Long Beach in June | ||||
| July | 73.2°F | 65.3°F | 78.8°F | warm |
| Sea water temperature in Long Beach in July | ||||
| August | 73.9°F | 68.4°F | 78.3°F | warm |
| Sea water temperature in Long Beach in August | ||||
| September | 70.9°F | 64.9°F | 77°F | warm |
| Sea water temperature in Long Beach in September | ||||
| October | 63.9°F | 57.2°F | 70.7°F | cold |
| Sea water temperature in Long Beach in October | ||||
| November | 55.9°F | 49.5°F | 63°F | cold |
| Sea water temperature in Long Beach in November | ||||
| December | 48.7°F | 40.8°F | 55.9°F | cold |
| Sea water temperature in Long Beach in December | ||||
Chart monthly average water temperature in Long Beach
