Mālaekahana is not near the famous North Shore beaches — it is about twenty-five minutes east of Sunset, round the top of the island past Turtle Bay and Kahuku — and that distance is exactly why it works.
The winter plan. Watch big surf at Waimea and Sunset in the morning, drive round to Mālaekahana in the afternoon and let everyone get in the water. This is how families on this coast survive a winter week, and nobody tells day-trippers about it.
The Goat Island plan. Check the tide table before you leave. You want to be at the beach around low water, which means the rest of the day builds around the tide rather than around the clock. Wade across, spend an hour, wade back well before the water rises.
The Lāʻie plan. Mālaekahana in the morning, Kahuku shrimp trucks for lunch, Polynesian Cultural Center from opening — this uses the PCC's awkward midday start rather than fighting it.
The camping plan. This is one of the best public campsites on Oʻahu and it books out. Permits, in advance, always.
Do not plan on it after dark. The gate locks, there is no lighting, and the highway back is unlit two-lane road.