March 14 to 19 – Festival de San Jose del Cabo – Festival of St. Joseph – San Jose del Cabo
Editor’s Note: According to the The tentative dates for 2015 are March 08 to March 19, 2015.

http://loscabos.gob.mx/blogs/prensa/index.php/todo-listo-para-las-fiestas-tradicionales-san-jose-2015/

This festival is in honor of the city’s patron saint, San José (St. Joseph). This 11-day festival culminates on March 19 every year. Beginning with evening parties and music on the 8th of March, the festival increases with carnivals and parades on weekends. Food venues are placed throughout all downtown, and booths carrying items like fresh warm tamales and sugared pumpkin candies are also available.

http://www.eventsloscabos.com/2013/03/festival-de-san-jose-patron-saint-of-san-jose-del-cabo/