The man, named today as Markku Juhani Smatt, 58, toppled while leaving the shower alcove naked and wet and struck his head at a budget resort in Patong.
Paramedics and police were called to the Austrian Garden Bungalow Resort off Rat-U-Tit 200 Pi Road about 3.20pm yesterday.
Mr Smatt was a large man, and police believe this may have contributed to his fall. His body was taken to Patong Hospital.
On October 20, Australian tourist Joseph Edward Thoms, 66, fell and struck his head and died at another Patong guesthouse.