Cities like San Diego experience moderate temperatures year-round due to the California Current and their coastal location.

The California Current, a cold ocean current that flows southward along the West Coast, plays a key role in moderating temperatures in cities like San Diego. This current helps keep coastal areas cooler during the hot summer months and warmer during winter. The combination of the cold ocean current and the city’s proximity to the coast results in a mild, temperate climate with minimal seasonal temperature fluctuations. This unique climate makes San Diego one of the most pleasant weather locations in the U.S. year-round.