San Luis Rey is a small city located in the northern part of San Diego County, California. It is situated on the San Luis Rey River, which flows from the nearby mountains to the Pacific Ocean. The city has a population of approximately 25,000 people and covers an area of about 8 square miles.

The city is known for its beautiful scenery and outdoor activities. It is home to several parks, including Mission San Luis Rey de Francia State Historic Park and Oceanside Harbor Beach Park. The city also features a variety of shopping centers, restaurants, and other attractions.

San Luis Rey has a Mediterranean climate with mild winters and warm summers. Average temperatures range from the mid-50s in winter to the mid-70s in summer. The area receives an average of 10 inches of rain per year.

The economy of San Luis Rey is largely based on tourism and agriculture. The city is home to several wineries and vineyards that produce award-winning wines. There are also many farms that grow avocados, citrus fruits, strawberries, and other crops.

San Luis Rey is served by two major highways: Interstate 5 and Highway 76. The nearest airport is McClellan-Palomar Airport in Carlsbad, which offers flights to major cities throughout California as well as some international destinations.