Sea off New England had one of its hottest years in 2023, part of a worldwide trend

PORTLAND, Maine (AP) — The sea off New England, already warming faster than most of the world’s oceans, had one of its hottest years on record in 2023.

The Gulf of Maine, which abuts New England and Canada, had an annual sea surface temperature nearly 2 degrees Fahrenheit above normal last year, scientists with the Portland, Maine-based Gulf of Maine Research Institute said Monday. The institute said it was the fifth-warmest year on record for the Gulf of Maine, a body of water critical to commercial fishing and other maritime industries.

The Gulf of Maine has emerged as a case study for the warming of the world’s oceans in the last 10 years, and the research institute said in a statement that last year’s warming was “consistent with the long-term trend of increasingly warm conditions driven primarily by” climate change.

The early portion of the year was especially warm, said Dave Reidmiller, director of the Climate Center at the Gulf of Maine Research Institute.