Join more than 15,000 members in Imperial and San Diego Counties.


Protect the La Jolla Harbor Seals and their Pups!!

Sign the Petition

The California Coastal Commission (CCC) will be deciding the fate of the harbor seal colony at Casa Beach in La Jolla on June 14th. Tell the CCC you support the continued closure of the beach during the pupping season and to maintain the guideline rope to protect the mothers and their pups.

The Seals will Thank You!

Help Support the San Diego Chapter

It’s never a bad time to donate your car/boat/motorcycle and you may qualify for a tax deduction!.

Select the San Diego Chapter when you donate.

Looking to get active?  Want to help protect our natural world and communities?

Let us help you find your perfect volunteer opportunity.  Just fill out our volunteer form HERE and one of our Coordinators of Volunteers will get right back to you and get you going!

Get Involved: Join SANDAC

SANDAC (San Diego Activist Citizens) is a group of Sierra Club Volunteers who are looking to prioritze public transportation in the 2019 edition of the Regional Transportation Plan.
Are you interested in volunteering your time to be a part of this program?

Be part of the movement.

Learn More


2019 Awards Dinner Celebration

Saturday, May 4, 2019
Our Environmental Heritage

The Sierra Club is not alone in fighting for the betterment of our environment.  We stand together with other outstanding organizations and individuals that educate, advocate and make significant contributions to insuring San Diego’s treasured environment is enhanced and protected.

Awardees and More Information Here

Premier Event Sponsor

Environmental Defenders Sponsors


Visit the Full Activities Calendar

Visit the Full Hiking and Biking Calendar


Show Your Support for the Sierra Club with this John Muir ball cap

Econscious organic/recycled ball cap with John Muir silhouette and Sierra Club San Diego.
70% certified organic cotton, 30% recycled polyester with adjustable closure.

   Looking for that special gift? Check out the Chapter’s online store where you can find all sorts of great items for everyone in the family show your support for the Sierra Club at the same time.

Visit the Sierra Club Store for great prices on backpacks, bags, caps, water bottles, travel mugs, coloring books and other great items.

April – June 2019 HiSierran

Join Sierra Club San Diego on an outing – where do you want to go? The choice is yours!