Lifeboat Foundation

At a pier in San Diego, researchers on Wednesday recorded the warmest sea surface temperature since record-keeping began there in 1916.

Every day, researchers from the Scripps Institution of Oceanography at the University of California San Diego collect data — by hand — from the Ellen Browning Scripps Memorial Pier.

Wednesday’s 78.6 degrees Fahrenheit at the pier surpassed a previous record of 78.4 degrees in 1931, researchers said in a statement on Thursday.