Coastal areas globally face mounting challenges due to increased human activities, resulting in substantial environmental impacts on beaches and marine ecosystems. This study delves into the influence of peak tourist seasons on cigarette butts (CBs) contamination along an urban beach, specifically Mar Grosso beach boardwalk in Laguna, Brazil. The study period spanned peak tourist seasons (PS) and off-seasons (OS), with data collected on CBs density and degradation levels across different areas of the boardwalk. A total of 6621 CBs were collected from the beach boardwalk along Mar Grosso beach, resulting in a density of 0.50 CBs/m