What’s better than watermelon on a hot summer day? Watermelon sorbet is a light, refreshing treat made from real frozen watermelon and bright tropical flavors like coconut and agave. It’s naturally sweet, easy to make, and perfect when you want something cool without the heaviness of ice cream.

This simple watermelon sorbet captures the taste of summer in minutes. Freeze cubed watermelon ahead of time, then blend it with a splash of coconut water and a touch of agave syrup. Garnish with fresh mint and black sesame seeds for contrast and color. It’s an ideal quick dessert for kids and adults alike, and it’s ready in about 10 minutes.
Watermelon Sorbet Recipe – What You Need
- Watermelon: Use pre-frozen cubed watermelon or freeze your own. Remove seeds before freezing or before blending for a smooth sorbet.
- Coconut water: Adds a subtle tropical flavor and helps the frozen watermelon blend more easily.
- Agave syrup: A mild liquid sweetener that blends well with frozen fruit. Honey or another liquid sweetener can be substituted if preferred.
- Garnish: Fresh mint leaves and black sesame seeds make the sorbet look attractive and add a little texture.
- High-speed food processor or blender: A powerful machine is important to turn the frozen watermelon into a silky sorbet without straining the motor.

How to Make Watermelon Sorbet
For the ingredient list and full instructions, see the recipe card below.
- Place frozen cubed watermelon, 1/2 cup coconut water, and 2 tablespoons agave syrup into a high-speed food processor or blender.
- Blend until smooth. If the mixture isn’t blending easily, add 1 tablespoon of coconut water at a time. The sorbet should be thick enough to hold a scoop shape.
- Serve immediately, garnished with fresh mint and black sesame seeds. If you prefer to serve later, transfer to an airtight, freezer-safe container and freeze.
Can I use coconut milk instead of coconut water?
Yes. Coconut milk will give the sorbet a richer, creamier mouthfeel. If you use coconut milk, start with a smaller amount and add more only if needed to help the blades move. Plain water with a drop of coconut extract also works in a pinch.
What other sweetener can I use?
Agave syrup is used here for its mild flavor and liquid texture, but honey, maple syrup, or a neutral simple syrup will all work as alternatives.
How to Freeze Watermelon
If you don’t buy pre-frozen watermelon, prepare it ahead of time so it’s ready when you want sorbet. Follow these steps:
- Line a baking sheet with parchment paper.
- Cut watermelon into roughly 1-inch cubes and remove the rind and any seeds.
- Arrange the cubes in a single layer on the prepared sheet so they don’t touch; this prevents clumping as they freeze.
- Freeze for 3–4 hours or until the cubes are completely solid.
- Use a spatula to remove the frozen cubes from the sheet and store them in a sealed container or bag until you’re ready to blend.

Tips on How to Make Watermelon Sorbet
Be sure the watermelon chunks are completely frozen—this is the key to achieving the right sorbet texture. If your food processor or blender is small, work in batches so the motor isn’t overloaded. We used a large 14-cup processor and it still filled only halfway with 4 cups of frozen watermelon.
For a creamier version, substitute coconut milk for some or all of the coconut water. If you want to reduce sweetness, start with less agave and taste before adding more.

How to Store Watermelon Sorbet
This sorbet is best enjoyed right away for the light, scoopable texture. To store, transfer the sorbet to an airtight container and freeze for up to one week. Before serving, let it sit at room temperature for 10–15 minutes to soften slightly, then scoop and garnish.

More frozen summer desserts to try
Frozen Summer Desserts
- Frozen margarita pie bars
- Protein strawberry-banana nice cream
- Pineapple smoothie
- Chocolate-covered strawberry frozen yogurt bars
Watermelon Sorbet Recipe
This watermelon sorbet combines frozen watermelon with coconut water and a touch of agave for a bright, refreshing frozen dessert. Ready in about 10 minutes, it’s a healthy, simple way to cool down on a hot day.
Ingredients
- 4 cups cubed watermelon, frozen
- ½–¾ cup coconut water (start with ½ cup and add more if needed)
- 2 tablespoons agave syrup (or honey, to taste)
- Black sesame seeds and fresh mint, for garnish
Instructions
- Add the frozen watermelon, ½ cup coconut water, and agave syrup to a high-speed food processor or blender.
- Blend until smooth. If the blades struggle, add 1 tablespoon of coconut water at a time until the mixture moves—aim for a thick, scoopable consistency.
- Serve immediately, garnished with black sesame seeds and fresh mint. To store, place in a freezer-safe container and freeze for up to one week; soften at room temperature for 10–15 minutes before serving.
Tips & Notes
- Make sure the watermelon is fully frozen for best texture.
- Blend in batches if your processor or blender is small.
- Use coconut milk instead of coconut water for a creamier sorbet.
- Substitute honey or another liquid sweetener if you prefer.
Nutrition
Calories: 42 kcal; Carbohydrates: 10 g; Protein: 1 g; Fat: 0.2 g; Fiber: 0.5 g; Sugar: 9 g. (Nutrition values are approximate.)
If you make this watermelon sorbet, garnish it simply and serve immediately for the best texture. It’s a naturally colorful, low-effort dessert that highlights seasonal fruit and comes together in minutes—perfect for backyard gatherings, pool days, or a light family dessert after dinner.