A powerful swell out of the northwest will produce potentially dangerous swimming and surfing conditions along the San Diego County coastline from Sunday to early on Christmas day, with waves cresting as high as 11 to 13 feet in some spots, the National Weather Service says.
Most of the waves will be in the 6-to-10 foot range and will be steepest at west-facing beaches, striking the coast at an angle that could cause minor beach erosion. Sea surface temperatures will be in the 57-to-59 degree range.
“Inexperienced swimmers should remain out of the water,” the weather service said in a statement. “It is extremely dangerous to fish or observe waves from exposed coastal structures or rocks during high surf conditions. Very large waves can suddenly sweep across previously dry areas.”