sunbather

/ˈsʌnˌbeɪðər/
noun
  1. A person who sits or lies in the sun to expose their skin to sunlight, typically to get a tan or for relaxation.
    • The beach was crowded with sunbathers enjoying the warm weather.
    • The lifeguard reminded sunbathers to apply sunscreen regularly.
    • A sunbather spread a towel on the grass and lay down in the sun.