Nahant Beach water temp
This data the coastal Nahant 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 Nahant Beach
Water temperature in Nahant Beach today is 63.1°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Nahant Beach was recorded in 2018 and was 67.1°F, and the coldest was recorded in 2013 at 60.6°F. Sea water temperature in Nahant Beach is expected to drop to 62.1°F in the next 10 days. September average water temperature in Nahant Beach is 63.9°F, the minimum temperature is 58.8°F, and the maximum is 71.6°F.
The swimming season in Nahant Beach lasts from July to August. During those months, Nahant Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Nahant Beach in winter reaches 41.9°F, in spring 44.8°F, in summer the average temperature rises to 64.2°F, and in autumn it is 57.4°F.
Nahant Beach water temperature now
| September 18, 2025 |
|---|
| today temp |
| 63.1°F |
| September 17, 2025 |
|---|
| yesterday temp |
| 60.6°F |
The ocean salinity in Nahant Beach is 30.70‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Nahant 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 Nahant 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 Nahant Beach. Data in table shown for September 18, 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 |
|---|---|---|---|
| 1' 4" | 1' 4" | 1' 4" | 1' 4" |
| 0.4 m | 0.4 m | 0.4 m | 0.4 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 1' 4" | 1' 3" | 1' 3" | 1' 3" |
| 0.4 m | 0.39 m | 0.38 m | 0.37 m |
Surf report in Nahant Beach
Nahant Beach weather forecast
Current temperature and weather
Data in a table show Nahant Beach temperature today (September 18, 2025). For more information and forecast for a few days, go to the weather forecast Nahant Beach.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 64°F | 63.9°F | 64°F | 65.1°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 |  |  |  |
| 66.9°F | 70.2°F | 74.1°F | 69.6°F |
You may also be interested in other sections of our site for Nahant Beach: Sunrise and Sunset, Tides
Nahant Beach water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Nahant 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 Nahant 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 | 41.4°F | 37.4°F | 45.9°F | cold |
| Ocean water temperature in Nahant Beach in January | ||||
| February | 38.7°F | 35.6°F | 42.3°F | cold |
| Ocean water temperature in Nahant Beach in February | ||||
| March | 39.2°F | 35.2°F | 47.3°F | cold |
| Ocean water temperature in Nahant Beach in March | ||||
| April | 43.5°F | 36.9°F | 49.8°F | cold |
| Ocean water temperature in Nahant Beach in April | ||||
| May | 51.4°F | 43.3°F | 63.1°F | cold |
| Ocean water temperature in Nahant Beach in May | ||||
| June | 59.5°F | 50.5°F | 67.3°F | cold |
| Ocean water temperature in Nahant Beach in June | ||||
| July | 66°F | 59°F | 74.5°F | cold |
| Ocean water temperature in Nahant Beach in July | ||||
| August | 66.9°F | 60.3°F | 73.4°F | cold |
| Ocean water temperature in Nahant Beach in August | ||||
| September | 63.9°F | 58.8°F | 71.6°F | cold |
| Ocean water temperature in Nahant Beach in September | ||||
| October | 57.6°F | 51.6°F | 64.6°F | cold |
| Ocean water temperature in Nahant Beach in October | ||||
| November | 50.9°F | 46.6°F | 57°F | cold |
| Ocean water temperature in Nahant Beach in November | ||||
| December | 45.7°F | 40.8°F | 50.4°F | cold |
| Ocean water temperature in Nahant Beach in December | ||||
Chart monthly average water temperature in Nahant Beach
