Karneval Rio 2025 Calendar. Carnival 2025 in rio de janeiro will occur from february 28 to march 8th, with various events leading up to the main festivities. One of the most notable aspects of carnival.
In 2025, rio de janeiro carnival will take place from february 28 th to march 8 th. The calendar that set the dates of easter is based on the moon, so every year the dates will change and that affects the rio carnival dates.