The primary risk from Hurricane Fausto is high surf and dangerous rip currents, particularly along east-facing shores. The Ocean Safety Department has expressed concerns about the potential for 'sneaker waves' that can unexpectedly sweep people into the ocean. Locations like the Makapuu tidepools are especially hazardous due to the lack of lifeguards and the risk of sudden, large waves. Emergency response times may be delayed during storm conditions, increasing the danger for those who ignore safety warnings. The storm's path is reminiscent of Hurricane Celia in 2016, which caused fatalities and significant damage.