Look for a deep, uniform color on the rind
Check for a creamy yellow field spot
Tap the watermelon and listen for a deep, hollow sound
Make sure the skin looks dull, not shiny
Check that the watermelon feels heavy for its size
Look for a dry, brown stem or tendril
Avoid melons with soft spots, cracks, or bruises
Press the rind gently to see if it is firm and unyielding