San Diego has a surprisingly large array of art activities and galleries. A great resource for finding art happenings in San Diego can be found here: http://artguidesd.com/
Here are a few of my favorites:
Art Walk NTC Great place to purchase art and be inspired by working artists, has a kid’s section: http://www.artwalksandiego.org/missionfederal/
Little Italy Festa-Was a wonderful chalk art, music, food, and activities celebrating the Italian Culture. They stopped in 2016 and are starting something new called Solo Italiano (Only Italian) which is to start in October of 2018. Little Italy SD
San Diego Festival of the Arts (La Jolla Art Festival): Fine art, entertainment and food: http://www.sdfestivalofthearts.org/festival-info/
Friday Night Liberty at Liberty Station: The first Friday of each month, studios, shops and museums are open from 5-8.
Art on 30th http://www.arton30th.com/ From their website: “Art on 30th was the vision of Kate Ashton in 2013 and officially opened its doors in January 2015. Ashton wanted a venue that honored the artists she mentored, a space that would be inspiring not only to work in, but for all who visit.”
Art Produce is a great little gallery and garden on University Avenue. They offer drop in community classes every Saturday from 2-4 p.m.