The Gambia is actively pursuing renewable energy integration, targeting a 40% threshold by 2021 in alignment with SDG7. However, regulatory and logistical obstacles impede this progress. Leveraging the nation’s abundant solar resources presents a significant opportunity, particularly in reaching remote rural communities beyond the utility grid through off-grid photovoltaic systems. Monitoring the performance of such a system is essential for sectoral growth and development. Over the course of a year, a study monitored the performance of a typical off-grid photovoltaic system, revealing notable seasonal variations. Optimal performance occurred during months with high temperatures and irradiance, notably in February, March, and April. Key performance indicators included an average reference yield of 190.55 kWh/kWp/month, array yield of 113.94 kWh/kWp/month, final yield of 99.46 kWh/kWp/month, capture loss of 77.36 kWh/kWp/month and system loss of 14.48 kWh/kWp/month. The system exhibited average array, inverter, and system efficiencies of 12.4%, 87.017% and 19.53% respectively, resulting in an average performance ratio (PR) of 52.22%. This study underscores the importance of understanding and optimizing the performance of off-grid photovoltaic systems to enhance renewable energy utilization in The Gambia and similar regions.