"If it's still green, the watermelon is very likely not ripe. If it is brown and dead, the fruit may be ripe," Egel said. A watermelon's color, shape and feel all are clues to its ripeness, says Dan ...
I like to see a deep yellow color here.” Look for a watermelon that feels heavy for its size, indicating more water is present. Check the part of the watermelon that had been sitting on the ground.