The sea surface temperature at the Scripps Pier in La Jolla hit 78.6 degrees on Wednesday, the highest reading in the pier’s 102-year history, according to UC San Diego’s Scripps Institution of Oceanography. The reading broke the previous record of 78.4 degrees, which was set in 1931. Scripps Oceanography officials say that sea surface temperatures had been running above normal for several days, but the record was not broken until Wednesday. The institute has been taking sea surface temperatures at that spot since August 1916 as part of its scientific research.