Watermelon Slushie with Berries

This watermelon slushie is a refreshing summer drink made with frozen watermelon, mixed berries, citrus, and fresh mint. It's frosty, fruity, naturally sweet, and perfect for hot days when you want something cold and easy to make.

A homemade watermelon slushie is a simple way to use fresh summer watermelon. The frozen watermelon cubes create that icy slushie texture without needing lots of ice, while the berries add beautiful color and a slightly tart flavor.

We love serving this frozen watermelon slushie on hot summer days as an afternoon refresher, a non-alcoholic drink for gatherings, or a fun frozen treat. It's best served straight from the blender while thick and frosty.

Scroll down for step-by-step photos, helpful tips, and easy flavor variations!

Jump to:

• Why You'll Love This Watermelon Slushie
• Ingredients You'll Need
• Seasonality: When Is Watermelon in Season?
• How to Choose a Sweet Watermelon
• How to Make a Watermelon Slushie
• Flavor Variations, Substitutions and Add-Ins
• Storage Instructions
• FAQ's
• More Watermelon Recipes
• Watermelon Slushie with Berries

Why You'll Love This Watermelon Slushie

• Refreshing - Frozen watermelon, berries, and mint make this a bright summer drink.
• Easy to make - Just freeze the watermelon, add everything to a blender, and blend until slushy.
• No ice needed - Frozen watermelon cubes create a thick, icy texture.
• Naturally sweet - Use ripe watermelon, then add honey or maple syrup only if needed.
• Perfect for summer - A cold, colorful drink for BBQs, pool days, and relaxed weekends.

Ingredients You'll Need

This watermelon slushie recipe uses simple ingredients that blend into a refreshing summer drink.

• Frozen watermelon - The base of the slushie, frozen for the best icy texture.
• Frozen mixed berries - Add color, tartness, and extra fruity flavor.
• Lemon juice or lime juice - Brightens and balances the sweetness.
• Fresh mint leaves - Adds a cool, refreshing flavor.
• Honey or maple syrup - Optional, depending on how sweet the watermelon is.
• Water - Helps everything blend while keeping the slushie thick.

See the recipe card for quantities

Seasonality: When Is Watermelon in Season?

Watermelon is a summer fruit, which makes it perfect for refreshing warm-weather drinks like this watermelon slushie.

During peak season, watermelon is especially sweet, juicy, and flavorful. That natural sweetness means you may not need to add much honey or maple syrup.

Want to learn more about seasonal produce? Explore the USDA Seasonal Produce Guide. 

How to Choose a Sweet Watermelon

A good watermelon makes all the difference in this recipe. Since this slushie has only a few ingredients, start with the sweetest, juiciest watermelon you can find.

• Choose a watermelon that feels heavy for its size, which usually means it is juicy.
• Look for a creamy yellow field spot, showing it had time to ripen on the ground.
• Pick a watermelon that feels firm and sounds deep and hollow when tapped.
• Avoid watermelons with soft spots, bruises, or cracks.

How to Make a Watermelon Slushie

Prepare and freeze the watermelon

Cut the watermelon into cubes and spread them in a single layer on a parchment-lined baking sheet. Freeze for at least 4 hours or overnight until completely frozen.

Chef's Tip: Freezing the watermelon in a single layer helps the cubes stay separate, which makes them easier to blend.

Add ingredients to the blender

Add the lemon or lime juice to the blender first. Then add the fresh mint leaves, frozen berries, frozen watermelon cubes, and honey or maple syrup (if using).

Blend

Blend on low speed, then increase to high speed until the mixture becomes thick and slushy. Add ¼ - ½ cup water gradually if needed to help the mixture blend.

Serve and enjoy!

Pour the slushie into glasses and garnish with extra mint leaves if desired. Serve immediately.

Chef's Tip: If the slushie becomes too liquid, add a few extra frozen watermelon cubes and blend again.

Flavor Variations, Substitutions and Add-Ins

This frozen watermelon slushie is easy to customize depending on what you have on hand.

• Make a watermelon lemonade slushie - Replace the berries and water with lemonade for a sweeter, tangier drink.
• Only use strawberries - Swap the mixed berries for frozen strawberries for a classic watermelon strawberry slushie.
• Add ginger - A small piece of fresh ginger adds a gentle warmth and works beautifully with lime.
• Make it boozy - For an adult version, add a splash of vodka and blend again.

Storage Instructions

• Fridge: This slushie is best served immediately. If stored in the fridge, it will melt and become more like a juice.
• Freezer: Freeze leftovers in an airtight container for up to 1 month. Let the mixture soften slightly, then re-blend before serving.
• Make Ahead: You can freeze the watermelon cubes ahead of time and keep them in a freezer-safe bag. When ready to serve, blend with the remaining ingredients and enjoy.

FAQ's

More Watermelon Recipes

If you love refreshing watermelon recipes, you may also like our:

• Watermelon Smoothie Recipe 
• Watermelon Feta Skewers
• Watermelon Salad with Feta Cheese and Olives
• Watermelon Frosé Recipe

This watermelon slushie with berries is cold, fruity, and so easy to make. It's a simple summer drink that feels fun and refreshing, whether you're serving it with lunch, sipping it outside, or making a quick frozen treat for the family.

Give it a try and let us know in the comments how it turned out! Don't forget to Pin it for later or share it with a friend.

Print

The nutrition is an estimate only. It was calculated using Nutrifox, an online nutrition calculator.