Playa Matamoros is generally safe for swimming, with the calm, clear turquoise waters characteristic of Cayo Santa María's protected northern shore. The beach features gentle wave action and gradual depths, suitable for most swimmers. However, as a lesser-known beach with fewer facilities, there may not be lifeguards on duty, so swimmers should exercise personal judgment and caution. Check local conditions before entering the water, watch for any posted warnings, and avoid swimming alone. The clarity of the water allows good visibility of the sandy bottom, adding to the safe swimming experience.

Visit Playa Matamoros during Cuba's dry season from November to April for optimal weather conditions with sunny days and minimal rainfall. For the least crowds, consider visiting during weekdays or the shoulder months of November and April when this already quiet beach becomes even more peaceful. The summer and early fall months bring higher humidity and risk of rain or tropical weather, but significantly fewer tourists. Since Matamoros is a lesser-known beach, it remains relatively uncrowded even during peak season compared to major resort beaches. Early morning visits offer the most serene experience.