Grunion Run Schedule 2025. This schedule predicts grunion runs at cabrillo beach near the los angeles harbor entrance. Thousands of small, silvery fish flock to mate on california beaches each spring in a spectacle called the grunion run.

In this article, i’ll be breaking down how to. Grunion runs occur between march and august up and down southern california when a combination of moon, tide and water temperature trigger the california.