Earlier this week it was jellyfish. Today, electrical problems caused the city to close the beach area of Hanauma Bay again.
The parking lot and the visitor center remain open.
The popular snorkeling attraction has been closed every day this week.
Jellyfish stung dozens of people on Monday and Wednesday, prompting the city to close the beach. The park is normally closed on Tuesday.
There was no immediate word how long it would take to fix the electrical problems.