San Martin is a small town located in Santa Clara County, California. It is known for its pleasant Mediterranean climate, characterized by warm, dry summers and mild, wet winters. The average temperature ranges from the mid-60s °F (around 18-20 °C) in winter to the mid-80s °F (around 27-30 °C) in summer, making it an ideal destination for outdoor enthusiasts.

Hydrologically, San Martin benefits from the nearby Chesbro and Uvas reservoirs, which provide water for irrigation and recreational activities. These reservoirs offer opportunities for boating, fishing, and picnicking. Additionally, San Martin is home to several small creeks, such as Fisher Creek and Carnadero Creek, which contribute to the local hydrology and add to the natural beauty of the area.

Outdoor recreation options in San Martin are plentiful. Visitors can explore the stunning landscapes by hiking, mountain biking, or horseback riding on the numerous trails that traverse the surrounding hills and valleys. The nearby Coyote Creek Trail also offers a scenic route for walking, running, and cycling. For those who enjoy golf, the CordeValle Golf Club provides a challenging course amidst picturesque surroundings.

Overall, San Martin's pleasant climate, hydrological features, and diverse outdoor recreation opportunities make it a desirable destination for nature lovers and adventure seekers alike.