How Long Does the Grunion Run Last?

Actual spawning runs are restricted to relatively few hours during this period. Grunion spawn only on 3 or 4 nights after the highest tide associated with each full or new moon and then only for a 1 to 3 hour period each night following high tide.

How many nights does a grunion run last?

of Fish and Wildlife (see California Grunion: Facts and Expected Runs) includes four nights following the full or new moon. Typically the third and fourth nights tend to be a bit better. The grunion may run anytime within a two-hour window after high tide so be prepared and be patient.

Which beach is best for grunion run?

La Jolla, Doheny State Beach in Dana Point, Huntington Beach, Cabrillo Beach in San Pedro and Malibu are typically places the grunion show up, though they can wash up on any Southern California beach. They seem to like sandy beaches with a gentle slope and rolling waves, rather than a dumping shore break.