Sebastian water temp

This data the coastal Sebastian 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 Sebastian

Water temperature in Sebastian today is 83.8°F. Based on our historical data over a period of ten years, the warmest water in this day in Sebastian was recorded in 2024 and was 86°F, and the coldest was recorded in 2012 at 81°F. Sea water temperature in Sebastian is expected to drop to 83.1°F in the next 10 days. September average water temperature in Sebastian is 83.3°F, the minimum temperature is 81°F, and the maximum is 86.4°F.

The swimming season in Sebastian lasts from January to December, twelve months per year! During those months, Sebastian water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Sebastian in winter reaches 71.2°F, in spring 74.7°F, in summer the average temperature rises to 81.9°F, and in autumn it is 80.1°F.

Sebastian water temperature now

The ocean salinity in Sebastian is 36.48‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sebastian 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 Sebastian. 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 Sebastian. Data in table shown for September 14, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Sebastian

Sebastian weather forecast

Current temperature and weather

Data in a table show Sebastian temperature today (September 14, 2025). For more information and forecast for a few days, go to the weather forecast Sebastian.

0-3 h	3-6 h	6-9 h	9-12 h
77.5°F	78.3°F	78.4°F	80.1°F

12-15 h	15-18 h	18-21 h	21-24 h
82.8°F	83.3°F	81.3°F	79.2°F

Sebastian water temperature by month

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

The most popular beaches and cities in Florida with sea temperature today, weather, air temperature and sea state (wave height)

	Water	Weather		Wave
Sarasota	84.7°F	84.2°F		1' 1"
Key West	86.9°F	84.2°F		0' 8"
Naples	86°F	86°F		0' 6"
Miami Beach	87.1°F	86°F		1' 6"
Fort Myers Beach	85.6°F	82.4°F		0' 5"
Destin	82.9°F	87.8°F		0' 7"
Fort Lauderdale	86.9°F	86°F		2' 8"
Key Largo	86.7°F	86°F		0' 6"
Cocoa Beach	83.8°F	82.4°F		1' 7"
Clearwater Beach	83.5°F	87.8°F		1' 5"

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Our report for Sebastian 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.