Coastal Southern California, including the city of San Diego, experiences a Mediterranean climate characterized by warm, dry summers and mild, wet winters. June and July typically represent the warmest and driest months of the year in this region. Days are generally sunny with minimal cloud cover. Average high temperatures range from the low 70sF (low 20sC) near the coast to the mid-80sF (high 20sC) inland. Coastal areas benefit from the cooling influence of the Pacific Ocean, while inland valleys experience warmer temperatures. Overnight lows remain comfortable, generally in the mid-60sF (high teensC).
Understanding the predictable summer climate is essential for planning activities and tourism in the San Diego area. The warm, sunny weather provides ideal conditions for outdoor recreation, including swimming, surfing, hiking, and exploring local attractions. This period is a popular time for visitors, contributing significantly to the local economy. Historically, this dry season has also shaped the region’s agriculture and water management practices.