— Warning signs were up at Emerald Isle again over the weekend, meaning the rip currents are so dangerous, swimmers should stay out of the water.

Rip currents are proving to be deadly this summer, with at least four deaths this month at Emerald Isle and Atlantic Beach.

Emerald Isle police have successfully helped more than 80 people to get out of the water because of rip currents since June 9.

.@WRAL Red flags up and down the beach in Emerald Isle. At 4, how to avoid rip currents, why they seem to be worse this year. #wral pic.twitter.com/52q6pRnajF — Amanda Lamb (WRAL) (@alamb) June 20, 2017

A 21-year-old man died at Vidant Medical Center in Greenville after being caught in a rip current Sunday morning, according to Atlantic Beach officials.

.@WRAL despite the threat of rip currents, people are still swimming in Emerald Isle. #wral pic.twitter.com/cd9J0Lbfl6 — Amanda Lamb (WRAL) (@alamb) June 20, 2017

Last weekend, a 17-year-old from Wayne County died after going missing while swimming at Emerald Isle.

A 16-year-old involved in that incident was brought to shore by a surfer and died Monday morning.

A 56-year-old man died Saturday after entering the water to help two teenage girls who were caught in a rip current.