New York, NY – The National Weather Service Eastern Region released updated Atlantic Ocean water temperatures Thursday, May 21, warning beachgoers that many East Coast waters remain dangerously cold ahead of Memorial Day weekend.
According to NOAA data, ocean temperatures across portions of the Northeast remain in the 40s and 50s despite warming spring air temperatures. Officials said cold water shock remains a serious safety concern, especially for swimmers and boaters entering the water unexpectedly.
Among the coldest readings Thursday morning were Eastport, Maine, at 43.3 degrees and Portland, Maine, at 52.3 degrees. Water temperatures also remained chilly farther south, including Newport, Rhode Island, at 56.8 degrees and Montauk, New York, at 57.7 degrees.
Farther down the coast, warmer readings were observed near Cape May, New Jersey, at 63.3 degrees, Lewes, Delaware, at 65.3 degrees, and Wrightsville Beach, North Carolina, where water temperatures reached 70.5 degrees.
The National Weather Service noted that some measurements come from protected bays and harbors, which often warm faster than open Atlantic waters during the spring and summer months.
Officials reminded beach visitors that even relatively mild air temperatures can create dangerous conditions when water temperatures remain cold. Sudden cold-water immersion can lead to shock, exhaustion, and increased drowning risks within minutes.
The advisory comes as millions of travelers are expected to head to beaches across the East Coast for the unofficial start of summer during Memorial Day weekend.
NOAA encouraged swimmers, boaters, and paddleboarders to review cold water safety guidance and wear life jackets whenever possible.
