Introduction: Many studies existed on the role of social isolation on sexual behaviour; but there is an inadequacy of such researches during Covid-19, particularly in Jamaica. Sexual behaviour is a critical aspect of health as it has implications for public health matters. Objectives: To determine the sexual behaviour of Jamaicans during Covid-19 as this will provide a platform for future public health programmes. Methods and materials: An associational research design was used to collect data from Jamaicans on their sexual behavior through a standardized survey. The survey instrument was designed in Google Forms and later stored and retrieved in the Statistical Packages for the Social Sciences for Widowed, Version 27.0. The instrument was placed on different social media platforms, and convenience sampling provided the respondents for data analysis. Findings: 76.8% (380) of the respondents indicated being sexually active, 72.4% (355) have one partner, 68.6% (334) does not reside with their sexual partners, 59.9% (296) participate in sexual activity such as masturbation, and 61.8% (304) view pornographic materials. To the question, "Do you believe that the isolation due to the pandemic affects your sexual behaviour?" 51.9% (257) of the respondents indicated yes. The number of respondents with multiple sexual partners has increased by 7.3% since the Covid-19 pandemic. More respondents are having sex weekly during the Covid-19 pandemic than before it. Conclusion: Based on the responses, there is an exponential rise in Jamaicans' weekly coitus and other sexual behaviours due to the COVID-19 pandemic.