Siasconset water temp
This data the coastal Siasconset 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 Siasconset
Water temperature in Siasconset 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 Siasconset was recorded in 2021 and was 65.8°F, and the coldest was recorded in 2024 at 58.6°F. Sea water temperature in Siasconset is expected to drop to 60.8°F in the next 10 days. September average water temperature in Siasconset is 64°F, the minimum temperature is 58.3°F, and the maximum is 69.6°F.
The swimming season in Siasconset lasts only one month - August. During this month, Siasconset water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Siasconset in winter reaches 42.4°F, in spring 44.4°F, in summer the average temperature rises to 62.6°F, and in autumn it is 58.3°F.
Siasconset water temperature now
| September 25, 2025 |
|---|
| today temp |
| 63.1°F |
| September 24, 2025 |
|---|
| yesterday temp |
| 62.8°F |
The ocean salinity in Siasconset is 31.99‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Siasconset 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 Siasconset. 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 Siasconset. Data in table shown for September 25, 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' 10" | 2' 9" | 2' 9" | 2' 9" |
| 0.87 m | 0.85 m | 0.85 m | 0.85 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 2' 11" | 3' 1" | 3' 5" | 3' 10" |
| 0.88 m | 0.94 m | 1.05 m | 1.17 m |
Surf report in Siasconset
Siasconset weather forecast
Current temperature and weather
Data in a table show Siasconset temperature today (September 25, 2025). For more information and forecast for a few days, go to the weather forecast Siasconset.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  | | |
| 64.2°F | 64.4°F | 65.1°F | 66.2°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 67.1°F | 67.1°F | 67.6°F | 68°F |
You may also be interested in other sections of our site for Siasconset: Sunrise and Sunset, Tides
Siasconset water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Siasconset. 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 Siasconset 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 | 41.9°F | 36.5°F | 47.5°F | cold |
| Ocean water temperature in Siasconset in January | ||||
| February | 39.6°F | 32.5°F | 44.2°F | cold |
| Ocean water temperature in Siasconset in February | ||||
| March | 40.1°F | 34.7°F | 46.6°F | cold |
| Ocean water temperature in Siasconset in March | ||||
| April | 43.7°F | 38.3°F | 50.4°F | cold |
| Ocean water temperature in Siasconset in April | ||||
| May | 49.5°F | 44.1°F | 59.2°F | cold |
| Ocean water temperature in Siasconset in May | ||||
| June | 56.8°F | 50.5°F | 65.3°F | cold |
| Ocean water temperature in Siasconset in June | ||||
| July | 64.6°F | 58.3°F | 69.8°F | cold |
| Ocean water temperature in Siasconset in July | ||||
| August | 66.6°F | 61.5°F | 71.2°F | cold |
| Ocean water temperature in Siasconset in August | ||||
| September | 64°F | 58.3°F | 69.6°F | cold |
| Ocean water temperature in Siasconset in September | ||||
| October | 59°F | 52.9°F | 64.9°F | cold |
| Ocean water temperature in Siasconset in October | ||||
| November | 52°F | 46°F | 59.2°F | cold |
| Ocean water temperature in Siasconset in November | ||||
| December | 46°F | 40.1°F | 51.6°F | cold |
| Ocean water temperature in Siasconset in December | ||||
Chart monthly average water temperature in Siasconset
