How cold is the ocean at the Jersey Shore?

The Atlantic ocean off New Jersey gets quite chilly during winter. The water temperature averages just 35 °F (2 °C) in February at Atlantic City. But come spring, the sea warms up rapidly. By summer, the ocean at New Jersey beaches is hot enough for an enjoyable swim.



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A little cooler than your body temperature (98.6° Fahrenheit) should not be too cold so that you don't get chilled. 70° to 78° Fahrenheit is the range where most folks feel comfortable swimming.

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Monthly average max / min water temperatures The graph below shows the range of monthly Jersey City water temperature derived from many years of historical sea surface temperature data. The warmest water temperature is in August with an average around 74.3°F / 23.5°C.

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For any given latitude, the Atlantic Ocean has proved to be about 16 degrees F (9 degrees C) warmer than the Pacific Ocean off the U.S. coast — quite a difference.

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