Energy balance models of the human body that integrate thermal conditions for different climate zones and climatic areas provide a useful method for the evaluation of the acceptability of thermal climate conditions for tourism and outdoor recreation. By adding precipitation to this, a more complete picture is gained of climate conditions and their significance. Using this approach a Tourism Climate Index has been devised and applied at a daily resolution to a tropical area, namely, Varadero, Cuba during 2000. The total value of the index is 100 and the results show for a typical winter month January a value of 60.6, for the transition months April 72 and October 74.2. For July results a value of 90, which shows an ideal touristic potential for this area.