Oʻahu FYI / Guides
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Oʻahu guides
The reservations and safety calls that make or break an Oʻahu trip.
Diamond Head hike: reservations, fees and hours (2026)
Diamond Head reservations for non-residents: book up to 30 days ahead, $5 per person and $10 parking, open 6 a.m. to 6 p.m. Plan the hike.
Read the guide →Hanauma Bay: reservations, hours and fees (2026)
Hanauma Bay is open Wednesday to Sunday. Reservations open 2 days ahead at 7 a.m. HST, walk-in tickets at 6:45 a.m., $25 for non-residents.
Read the guide →Pearl Harbor and the USS Arizona Memorial: tickets and timing (2026)
USS Arizona Memorial tickets are free with a $1 Recreation.gov fee, released daily at 3 p.m. HST 8 weeks and 1 day ahead. No walk-up tickets; standby only.
Read the guide →North Shore winter surf: how to watch it safely
Winter swells bring big surf to Oʻahu's North Shore. How to check high surf warnings, where lifeguards are, and how to watch safely.
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