San Francisco Event Calendar September 2025 Calendar. From san francisco pride to carnaval, from fleet week to bay to illuminate sf, our calendar is full of events and festivals all year round. San francisco in september is the perfect time to be outside.

Attending one or more of these will make your trip an unforgettable experience. Our 2024/25 theatre season features the play that goes wrong, waitress, exotic deadly, fat ham, the curious incident, and more.