Sea Island water temp

This data the coastal Sea 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 Sea Island

Water temperature in Sea Island today is 82°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Sea Island was recorded in 2018 and was 84.4°F, and the coldest was recorded in 2008 at 76.6°F. Sea water temperature in Sea Island is expected to drop to 78.3°F in the next 10 days. September average water temperature in Sea Island is 82.2°F, the minimum temperature is 76.6°F, and the maximum is 86.9°F.

The swimming season in Sea Island lasts from April to November. During those months, Sea Island water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Sea Island in winter reaches 59.7°F, in spring 68.4°F, in summer the average temperature rises to 82.9°F, and in autumn it is 75.4°F.

Sea Island water temperature now

The ocean salinity in Sea Island is 33.75‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sea 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 Sea 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 Sea Island. Data in table shown for September 26, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Sea Island

Sea Island weather forecast

Current temperature and weather

Data in a table show Sea Island temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Sea Island.

0-3 h	3-6 h	6-9 h	9-12 h
79.5°F	77.4°F	76.1°F	78.1°F

12-15 h	15-18 h	18-21 h	21-24 h
84.9°F	84°F	81°F	79.5°F

Sea Island water temperature by month

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

The nearest beaches and cities from Sea Island 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
Driftwood Beach	82.2°F	84.2°F		1' 5"
Darien	81.3°F	84.2°F		1' 3"
Cumberland Island	82.4°F	84.2°F		1' 9"
Amelia Island	82.2°F	84.2°F		1' 7"
Fernandina Beach	82.2°F	84.2°F		1' 7"
American Beach	82°F	84.2°F		1' 7"
Franklintown	82°F	87.8°F		1' 7"
Little Talbot Island	82°F	84.2°F		1' 6"
Montgomery	81°F	82.4°F		1' 5"
Jacksonville	82°F	87.8°F		1' 8"

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Get widget or API for your website

Our report for Sea 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.