The usual method to determine how ripe the mangoes are is their skin colour. For ripe mango, the skin turns from green to deep orange or yellow depending on the variety. However, not every variety changes its colour. So the other ways to determine the ripeness are: 1. Smell the stem to check the scent. The exceptionally sweet aroma indicates the mango is ripe. 2. It is ripe and ready to eat if it feels tender when lightly pressed with fingertips.