Toilets at the Dunes Gardens in Quebec Road, Mablethorpe will close from 4.30pm due to recent vandalism and anti-social behaviour.
There has been some damage incurred recently including toilet roll holders and soap dispensers ripped from walls and snapped toilet seats.
From October 31, the toilets will close from 4pm through the winter months.
East Lindsey District Council’s portfolio holder for the environment, Coun Steve Newton, said: “We have tried to keep the toilets open as long as possible, especially in an attempt to meet the needs of last week’s Mablethorpe Marathon, but it is unacceptable that our toilets are subject to this level of repeated vandalism.
“Until the matter is resolved we will be closing the toilets each day from 4.30pm.”