Ocean Water Temperatures in San Diego

Relax at North Pacific Beach

San Diego's excellent climate is often referred to as being 'Mediterranean.' That's no surprise, really, considering it is situated on the same latitude as Italy, Greece, and Spain and is, therefore, the same distance from the equator.

The year-round mild temperatures, even in the height of summer, can be attributed to the Maritime Effect from the Pacific Ocean, the effect the ocean and coastline has on the weather.

In the summer, ocean currents from thousands of miles away are cool and have the effect of lowering the temperatures on the nearby areas of San Diego and keeping the weather dry.

In the winter, the currents are warmer, which means that the air passing over them isn't cooled down as much and prevents the land from becoming too cold. They also bring welcoming rain. The result is mild winters and relatively cool summers and a cool sea breeze along the coast for much of the year.

La Jolla Cove and the Path Above the Beach

Along with the rest of California, and the western USA, the region is already feeling the dramatic effects of climate change. As the oceans heat up and sea levels rise, possible effects could include heavier rainfall and longer wildfire seasons in the whole of Southern California.

The effects of climate change can already be felt in the gradual warming of coastal waters over time, especially within the last decade. While sun-warmed water is no doubt enjoyable when you’re going for a swim, it’s important to recognize the effects that these changes have on San Diego’s climate as a whole.

Not only do shifts in ocean temperatures cause higher rates of humidity during summer months, but they also impact the habitats of marine life. The stunning biodiversity you see when snorkeling and scuba diving off the coast is increasingly threatened as the effects of climate change continue to grow.

While the spectacular cliffs along San Diego's coastline could act as a natural barrier against flooding, the climate change will directly affect San Diego in a negative way and is something we should do our part now to slow or stop to protect the future of San Diego.