The watermelon rind often provides clues to its ripeness. Look the watermelon over. You are looking for a firm, symmetrical watermelon that is free from bruises, cuts or dents. A smooth rind usually indicates a good fruit. A ripe watermelon will be faded on the top, and if there are stripes on the melon, the area between the stripes should be light green. Turn it over. The underside of the watermelon should have a creamy yellow spot from where it sat on the ground and ripened in the sun. Watermelons at the peak of ripeness will usually be filled out and blunt on the ends. Pointy ends indicate that the melon may still be maturing and not as tasty. Lift the melon. It should be heavy for its size. Watermelon is 92% water, most of the weight is water. For more about watermelons, click here for information from the National Watermelon Promotion Board.