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**IMPORTANT PARK NOTICES**
Monitor local surf and weather reports before your park visit.
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[OʻAHU] UPDATED 2/7/25 – Diamond Head State Monument (DHSM): Full park closures will commence Tuesdays through Fridays beginning March 4 to March 14, and April 1 to April 11. Partial park closures from 6:00 AM to 2:00 PM occur on Monday\'s during this time. Full park closures will also occur Monday through Thursday April 14 to April 17. Normal park hours from 6:00 AM to 6:00 PM will resume during Spring Break March 17 to March 28, Good Friday Holiday on April 18, and Weekends. Partial park closures from 6:00 AM to 2:00 PM will continue again Monday through Friday, (excluding weekends and holidays) on April 21. The project began January 6, 2025, and will run to July 25, 2025, or upon completion of the rock fall mitigation construction project at the Kahala Tunnel. During Partial park closures from 6:00 AM to 2:00 PM, the last reservation time slot for Parking and Entry and Entry Only will be 12:00 p.m. If you reserved at 12:00 p.m., you must enter the Park no later than 12:30 p.m. or you will be denied entry. Please check back for updates.
When is the best time for whale watching and off of which island?
Posted on Oct 15, 2021Humpback Whales begin arriving at the main Hawaiian Islands as early as September and stay as late as May with the peak season occurring in the months of January and February. The highest concentrations of sightings are in the shallow waters between the islands of Maui, Lanai and Molokai, on the north coast of Kauai and off the Kohala coast on the island of Hawaii. Humpback Whale sightings are also common on the island of Oahu but not as frequent as the other locations. Whale watching boat tours are available through vendors on all main islands. Please check the website of the Humpback Whale National Marine Sanctuary for more information:
www.hihwnms.nos.noaa.gov
Please practice responsible wildlife viewing by keeping a safe distance – 100 yards from whales, and do not approach or harass them.