Darien (CT) water temp

This data the coastal Darien 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 Darien

Water temperature in Darien today is 70.2°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Darien was recorded in 2021 and was 72.1°F, and the coldest was recorded in 2013 at 68.4°F. Sea water temperature in Darien is expected to drop to 67.8°F in the next 10 days. September average water temperature in Darien is 71.6°F, the minimum temperature is 66.4°F, and the maximum is 78.8°F.

The swimming season in Darien lasts from July to September. During those months, Darien water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Darien in winter reaches 40.8°F, in spring 46.2°F, in summer the average temperature rises to 70.2°F, and in autumn it is 64°F.

Darien water temperature now

The ocean salinity in Darien is 27.72‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Darien 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 Darien. 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 Darien. 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 Darien

Darien weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
68.7°F	68.9°F	69.8°F	70.9°F

12-15 h	15-18 h	18-21 h	21-24 h
73°F	72°F	71.8°F	72.1°F

Darien water temperature by month

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

The nearest beaches and cities from Darien 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
West Beach	70.2°F	71.6°F		0' 6"
Westport	70.2°F	71.6°F		0' 11"
Compo Beach	70.2°F	71.6°F		0' 11"
Sherwood Island	70.2°F	71.6°F		0' 11"
Lloyd Harbor	70°F	71.6°F		0' 6"
Centre Island	70°F	71.6°F		0' 6"
Oyster Bay Cove	70°F	71.6°F		0' 6"
Asharoken	69.8°F	71.6°F		0' 7"
Cos Cob	70°F	71.6°F		0' 4"
Bayville	70.2°F	71.6°F		0' 5"

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Our report for Darien 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.