Here are some homemade remedies against uncomfortable sunburn you might be interested in:
Washcloth soaked in cool water, to ease burning relief.
Drinking loads of water helps cool the body down and recovering from the burn.
When taking a cool shower or bath, avoid using soaps (as this might irritate your skin furthermore) and scraping yourself with sponges.
Apply lotions after showers or baths, to keep the skin from drying up.