Keyport water temp

This data the coastal Keyport 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 Keyport

Water temperature in Keyport today is 70.5°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Keyport was recorded in 2021 and was 72°F, and the coldest was recorded in 2013 at 65.1°F. Sea water temperature in Keyport is expected to drop to 66.4°F in the next 10 days. September average water temperature in Keyport is 71.2°F, the minimum temperature is 64.9°F, and the maximum is 78.3°F.

The swimming season in Keyport lasts from June to September. During those months, Keyport water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Keyport in winter reaches 42.1°F, in spring 49.1°F, in summer the average temperature rises to 72.5°F, and in autumn it is 62.8°F.

Keyport water temperature now

The ocean salinity in Keyport is 27.35‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Keyport 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 Keyport. 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 Keyport. 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 Keyport

Keyport weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
71.2°F	68.2°F	66.7°F	70.9°F

12-15 h	15-18 h	18-21 h	21-24 h
77.5°F	82.4°F	81.7°F	74.1°F

Keyport water temperature by month

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

The nearest beaches and cities from Keyport 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
Laurence Harbor	70.5°F	82.4°F		1' 3"
Tottenville	70.5°F	82.4°F		1' 3"
South Amboy	70.5°F	82.4°F		1' 3"
Union Beach	70.5°F	82.4°F		1' 3"
Raritan Bay	70.5°F	82.4°F		1' 3"
Woodbridge	70.3°F	78.8°F		1' 3"
Perth Amboy	70.3°F	84.2°F		1' 1"
Port Reading	70.3°F	84.2°F		1' 1"
Sewaren	70.3°F	84.2°F		1' 1"
North Middletown	70.5°F	84.2°F		1' 3"

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Our report for Keyport 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.