March: Wet-season rains turn the islands green, giant coreopsis blazes yellow on Anacapa, and gray whales are migrating along the channel crossing. Your boat ride may double as a whale watch.
Permits and reservations
There is no entry fee or reservation, but you can only get to the islands by the park's boat or plane concessioner (or your own boat).
Landing permit for Santa Cruz Island (Nature Conservancy land): No permit is needed to land on the park's islands. A landing permit is required to hike on The Nature Conservancy's property, the western 76% of Santa Cruz Island.
Island campgrounds: Advance reservations are required for all frontcountry and backcountry campsites, up to 6 months ahead on Recreation.gov. A reservation covers one site per night for up to four people, and you need your boat or plane booking too.
Boat or plane to the islands: The islands are reached only by the park's boat and plane concessioners (or your own boat). Book early. Trips can be canceled for weather.