Sand Beach water temp

This data the coastal Sand 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 Sand Beach

Water temperature in Sand Beach today is 56.5°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Sand Beach was recorded in 2021 and was 58.8°F, and the coldest was recorded in 2013 at 53.2°F. Sea water temperature in Sand Beach is expected to drop to 54.9°F in the next 10 days. September average water temperature in Sand Beach is 56.1°F, the minimum temperature is 52.7°F, and the maximum is 61.9°F.

Throughout the year, the water temperature in Sand Beach does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in Sand Beach in winter reaches 42.3°F, in spring 41°F, in summer the average temperature rises to 54.1°F, and in autumn it is 53.4°F.

Sand Beach water temperature now

The sea salinity in Sand Beach is 30.03‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sand 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 Sand 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 Sand Beach. 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)

Surf report in Sand Beach

Sand Beach weather forecast

Current temperature and weather

Data in a table show Sand Beach temperature today (September 25, 2025). For more information and forecast for a few days, go to the weather forecast Sand Beach.

0-3 h	3-6 h	6-9 h	9-12 h
52°F	50.4°F	48.9°F	55.9°F

12-15 h	15-18 h	18-21 h	21-24 h
57.4°F	56.7°F	57.6°F	59.5°F

Sand Beach water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Sand 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 Sand 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

Chart monthly average water temperature in Sand Beach

The nearest beaches and cities from Sand Beach with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Southwest Harbor	55.9°F	57.2°F		2' 7"
Seawall	55.2°F	57.2°F		3' 3"
Union River Bay	57.4°F	57.2°F		1' 11"
Sedgwick	58.5°F	57.2°F		1' 9"
Surry	60.1°F	57.2°F		1' 7"
Marshall Island	55.2°F	57.2°F		3' 5"
Stonington	57.9°F	57.2°F		2' 3"
Addison	57°F	57.2°F		1' 9"
Deer Isle	58.1°F	57.2°F		2' 3"
Castine	58.8°F	59°F		0' 7"

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Our report for Sand Beach is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.