Fisher Island water temp
This data the coastal Fisher Island 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 Fisher Island
Water temperature in Fisher Island today is 85.6°F. Based on our historical data over a period of ten years, the warmest water in this day in Fisher Island was recorded in 2024 and was 86.5°F, and the coldest was recorded in 2008 at 83.3°F. Sea water temperature in Fisher Island is expected to drop to 84°F in the next 10 days. September average water temperature in Fisher Island is 85.5°F, the minimum temperature is 83.1°F, and the maximum is 88.7°F.
The swimming season in Fisher Island lasts from January to December, twelve months per year! During those months, Fisher Island water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Fisher Island in winter reaches 76.6°F, in spring 78.8°F, in summer the average temperature rises to 85.3°F, and in autumn it is 82.9°F.
Fisher Island water temperature now
| September 26, 2025 |
|---|
| today temp |
| 85.6°F |
| September 25, 2025 |
|---|
| yesterday temp |
| 85.3°F |
The ocean salinity in Fisher Island is 36.44‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Fisher Island 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 Fisher Island. 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 Fisher Island. 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' 11" | 0' 10" | 0' 9" | 0' 9" |
| 0.27 m | 0.26 m | 0.24 m | 0.23 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 0' 8" | 0' 7" | 0' 7" | 0' 7" |
| 0.21 m | 0.19 m | 0.18 m | 0.17 m |
Surf report in Fisher Island
Fisher Island weather forecast
Current temperature and weather
Data in a table show Fisher Island temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Fisher Island.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 80.1°F | 79.9°F | 79°F | 81°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | |  | |
| 85.3°F | 88.5°F | 83.7°F | 83.1°F |
You may also be interested in other sections of our site for Fisher Island: Sunrise and Sunset, Tides
Fisher Island water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Fisher Island. 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 Fisher Island 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 | 76.1°F | 71.2°F | 79.9°F | warm |
| Ocean water temperature in Fisher Island in January | ||||
| February | 75.9°F | 71.4°F | 79.3°F | warm |
| Ocean water temperature in Fisher Island in February | ||||
| March | 76.6°F | 71.8°F | 80.1°F | warm |
| Ocean water temperature in Fisher Island in March | ||||
| April | 78.6°F | 74.1°F | 82.8°F | hot |
| Ocean water temperature in Fisher Island in April | ||||
| May | 81.1°F | 77.5°F | 85.8°F | hot |
| Ocean water temperature in Fisher Island in May | ||||
| June | 83.8°F | 79.9°F | 87.1°F | hot |
| Ocean water temperature in Fisher Island in June | ||||
| July | 85.6°F | 82.6°F | 89.1°F | hot |
| Ocean water temperature in Fisher Island in July | ||||
| August | 86.4°F | 82.9°F | 89.6°F | hot |
| Ocean water temperature in Fisher Island in August | ||||
| September | 85.5°F | 83.1°F | 88.7°F | hot |
| Ocean water temperature in Fisher Island in September | ||||
| October | 83.1°F | 79°F | 86.4°F | hot |
| Ocean water temperature in Fisher Island in October | ||||
| November | 80.2°F | 76.8°F | 84.7°F | hot |
| Ocean water temperature in Fisher Island in November | ||||
| December | 77.9°F | 73.8°F | 81°F | hot |
| Ocean water temperature in Fisher Island in December | ||||
Chart monthly average water temperature in Fisher Island
