Look at the yellow part of the watermelon
The yellow part of the watermelon, often found at the base, is a good indicator of ripeness. This is the area that touches the ground during growth. If it’s yellow, it’s a good sign; it means the watermelon has ripened naturally. On the other hand, a watermelon with this white area may still be unripe.
Look at the watermelon’s marbling.
Marbling or streaks on a watermelon can also indicate its quality. Watermelons with dense, even marbling are typically sweeter and juicier. However, if the marbling is sparse or broken, there’s a good chance the watermelon isn’t ripe enough.
