Triandis' theory of interpersonal behavior was used to analyze factors related to condom use among Canadian spring-break vacationers in Daytona Beach, Florida, who had engaged in coital activity with existing relationship partners (N= 46) or casual partners (N= 121). Intention to use condoms explained 36% of the variance in condom use with relationship partners, but only 10% with new partners. An additional 43% was explained by prior condom use and conditions facilitating condom use. Conditions facilitating condom use had the strongest influence on condom use, with new partners followed by prior condom use and intentions. The latter two variables exerted both direct and indirect influences on condom use.