Smith Island water temp

This data the coastal Smith 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 Smith Island

Water temperature in Smith Island today is 40.8°F. Based on our historical data over a period of ten years, the warmest water in this day in Smith Island was recorded in 2015 and was 48.6°F, and the coldest was recorded in 2010 at 41°F. Sea water temperature in Smith Island is expected to rise to 43.9°F in the next 10 days. December average water temperature in Smith Island is 46.2°F, the minimum temperature is 36.9°F, and the maximum is 54.7°F.

The swimming season in Smith Island lasts from May to October. During those months, Smith Island water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Smith Island in winter reaches 42.3°F, in spring 55.4°F, in summer the average temperature rises to 79.3°F, and in autumn it is 66°F.

Smith Island water temperature now

Surf Forecast in Smith 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 Smith 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 Smith Island. Data in table shown for December 21, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Smith Island

Smith Island weather forecast

Current temperature and weather

Data in a table show Smith Island temperature today (December 21, 2025). For more information and forecast for a few days, go to the weather forecast Smith Island.

0-3 h	3-6 h	6-9 h	9-12 h
42.1°F	42.1°F	42.3°F	42.6°F

12-15 h	15-18 h	18-21 h	21-24 h
44.8°F	47.3°F	45.5°F	39°F

Smith Island water temperature by month

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

Chart monthly average water temperature in Smith Island

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Our report for Smith Island 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.