Bring water, sugar, and cinnamon to a simmer in a small saucepan. Cook until sugar dissolves, about 1 minute.
Arrange clementines in a large bowl. Pour warm syrup over top, and let stand for at least 30 minutes.
Divide clementines and syrup among 4 bowls.
I thought the oranges were added to enhance the flavor. Could you do that and store it in the fridge?