Coastal areas are particularly vulnerable to sea level rise. A NASA analysis shows that the global mean sea level rose 0.03 inches (0.08 centimeters) in 2025. The dotted red line projects future sea level rise. “The weather gives us a wild ride, and what we saw with sea level rise last year is part of that ride,” said Josh Willis, a sea level researcher at NASA’s Jet Propulsion Laboratory in Southern California. The dataset indicates that the average global sea level has gone up by 4 inches (10 centimeters) since 1993.