About Rio Del Mar, CA

Rio Del Mar, in California, United States, is home to roughly 9,200 people in the Pacific Time Zone at 37°N latitude.

Across a typical year Rio Del Mar sees about 22 inches of precipitation, with January the wettest month and July the driest. Temperatures range from January lows near 40°F up to July highs around 72°F, averaging 57°F annually — characteristic of a temperate oceanic climate.