Sayville Summerfest 2025 Lok. Sayville chamber summerfest to return: The greater sayville chamber of commerce hosted the beloved annual event, summerfest, this past weekend from friday evening, aug.

The greater sayville chamber of commerce will be hosting their annual summer festival on august 2nd, 3rd and 4th of 2025. Cohalan 4 mile run is on saturday august 3, 2025.