Cut the ripe cantaloupe in half and scoop out the seeds. Use a melon baller or a spoon to scoop the flesh into a bowl.

In a blender, combine the cantaloupe flesh, sugar, water, and lemon juice. Blend on high speed until you achieve a smooth consistency, approximately 30 seconds.

Taste the mixture. If you desire more sweetness, add additional sugar to suit your palate.

Pour the smooth cantaloupe mixture into a shallow dish. Cover with plastic wrap and place in the freezer for about 2 hours, or until firm.

Once frozen, use a fork to scrape the surface to create a fluffy, granita-like texture. Serve immediately in chilled bowls or cups.