The average summer temperature along the California coastline typically ranges from 60°F to 70°F.

The coastal regions of California experience moderate summer temperatures, primarily due to the cooling influence of ocean currents, such as the California Current. While inland areas can become much warmer, coastal temperatures tend to stay relatively mild. In cities like San Francisco and Los Angeles, summer temperatures often hover between 60°F to 70°F, with cooler conditions in the morning and evening due to fog and marine air. This makes the coast ideal for those seeking more temperate summer weather.