July to August in Costa Mesa, and the Fair is always there. The OC Fair has marked the end of Southern California's summer for over a century — the same sprawling grounds, the same negotiation between fair food and agricultural heritage that makes it its own category. OC Fair & Event Center, July 17 through August 16, 2026. Open Wednesday through Sunday. Deep-fried everything, carnival rides, six performance stages, agricultural exhibits, and the night concerts at the Pacific Amphitheatre that fill the back half of summer. The Fair doesn't try to be something else. That's why it works. The food competitions run throughout the season. The livestock shows run the …