San Mateo is a vibrant city located in San Mateo County, California. It enjoys a Mediterranean climate characterized by mild, wet winters and warm, dry summers. The city experiences average temperatures ranging from the mid-50s °F (10-15 °C) in winter to the mid-70s °F (23-26 °C) in summer. It is known for its pleasant weather with limited temperature extremes.

San Mateo benefits from its proximity to the Pacific Ocean, resulting in a temperate climate and moderate rainfall. Hydrologically, the city is situated near the San Francisco Bay and is bordered by several creeks, including San Mateo Creek and Laurel Creek, which flow into the bay. These water bodies provide a natural habitat for various species and offer scenic beauty for residents and visitors alike.

Outdoor enthusiasts have a range of recreational opportunities in San Mateo. The city boasts numerous parks, including Coyote Point Recreation Area and Central Park, which offer picnic areas, trails, and sports facilities. The nearby San Mateo County coastline provides opportunities for beach activities, such as swimming, surfing, and fishing. Additionally, hiking and biking trails can be found in nearby areas like the San Francisco Bay Trail and the Crystal Springs Regional Trail, offering stunning views of the surrounding landscape.