Updated June 14, 11:50 a.m.
A high surf advisory is in effect for south-facing shores of Hawaiʻi Island from 6 p.m. Saturday, June 13, through 6 a.m. Tuesday, June 16, as forecasters in Honolulu track a long-period south-southwest swell building across the island chain.
Surf is expected to reach 8 to 12 feet by late Saturday night, increasing to 10 to 14 feet from Sunday afternoon, June 14, through Monday night, June 15. Officials also forecast coastal flooding for all shorelines of the Big Island through Tuesday.
High surf advisory and coastal impacts
- Kahaluʻu, Laʻaloa (Magic Sands), and Kohanaiki Beach Parks are closed today.
- Other beach parks may close without notice.
- Wave run-up and wash-over are possible on beaches, especially near high tide.
- Follow all directions from Ocean Safety officials. When in doubt, do not go out.
- Residents and visitors along south-facing shores should take precautions to protect people and property.
Forecasters expect moderate to high impacts, with strong breaking waves and powerful currents creating dangerous conditions along advisory shores.
King Tides to worsen coastal flooding
The incoming south-southwest swell combined with King Tides over the next couple of days will increase the risk of more widespread coastal impacts, particularly during the afternoon and evening high tides. Low-lying areas along south and west shores will be most vulnerable.
Peak timing and areas affected by high surf advisory
The long-period swell will build tonight, peak Sunday night into Monday, then gradually ease through the rest of the week. South and west shorelines will feel the largest surf, with south shores at advisory levels.
During the peak, surf on south-facing shores could approach warning thresholds, and west-facing shores could reach advisory heights.
For additional context on similar conditions, see the recent high surf advisory in effect for Hawaiʻi Island south shores.
The public is urged to use caution near the ocean and to heed all advice from Ocean Safety officials.
For the latest official forecast details, visit the National Weather Service in Honolulu at weather.gov/hfo.
