Montauk water temp
This data the coastal Montauk 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 Montauk
Water temperature in Montauk today is 68.5°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Montauk was recorded in 2018 and was 73°F, and the coldest was recorded in 2017 at 66.7°F. Sea water temperature in Montauk is expected to be constant 68.5°F in the next 10 days. September average water temperature in Montauk is 68.2°F, the minimum temperature is 63.7°F, and the maximum is 73.2°F.
The swimming season in Montauk lasts from July to September. During those months, Montauk water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Montauk in winter reaches 43.9°F, in spring 45.5°F, in summer the average temperature rises to 66.6°F, and in autumn it is 62.4°F.
Montauk water temperature now
| September 5, 2025 |
|---|
| today temp |
| 68.5°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 68.5°F |
The sea salinity in Montauk is 28.49‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Montauk 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 Montauk. 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 Montauk. 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 |
|---|---|---|---|
| 2' 5" | 2' 6" | 2' 6" | 2' 6" |
| 0.74 m | 0.76 m | 0.76 m | 0.75 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 2' 8" | 3' 3" | 3' 5" | 3' 3" |
| 0.81 m | 0.99 m | 1.03 m | 0.98 m |
Surf report in Montauk
Montauk weather forecast
Current temperature and weather
Data in a table show Montauk temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Montauk.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | | |
| 67.3°F | 68.2°F | 68.9°F | 69.3°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 |  | | |
| 70°F | 70°F | 69.8°F | 69.8°F |
You may also be interested in other sections of our site for Montauk: Sunrise and Sunset, Tides
Montauk water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Montauk. 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 Montauk 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°F | 37.8°F | 49.6°F | cold |
| Sea water temperature in Montauk in January | ||||
| February | 39.9°F | 33.4°F | 45.3°F | cold |
| Sea water temperature in Montauk in February | ||||
| March | 40.5°F | 33.8°F | 50.4°F | cold |
| Sea water temperature in Montauk in March | ||||
| April | 44.4°F | 36.9°F | 52°F | cold |
| Sea water temperature in Montauk in April | ||||
| May | 51.6°F | 44.4°F | 63°F | cold |
| Sea water temperature in Montauk in May | ||||
| June | 60.6°F | 52.7°F | 70°F | cold |
| Sea water temperature in Montauk in June | ||||
| July | 68.5°F | 62.1°F | 73.8°F | warm |
| Sea water temperature in Montauk in July | ||||
| August | 70.3°F | 66.9°F | 74.3°F | warm |
| Sea water temperature in Montauk in August | ||||
| September | 68.2°F | 63.7°F | 73.2°F | warm |
| Sea water temperature in Montauk in September | ||||
| October | 63°F | 55.9°F | 68.4°F | cold |
| Sea water temperature in Montauk in October | ||||
| November | 56.1°F | 50°F | 62.6°F | cold |
| Sea water temperature in Montauk in November | ||||
| December | 48.7°F | 42.4°F | 54.3°F | cold |
| Sea water temperature in Montauk in December | ||||
Chart monthly average water temperature in Montauk
