Watermelon Slushie

This easy Watermelon Slushie is a natural alternative to the slushies bought at gas stations and convenience stores. It’s wonderfully refreshing on a hot summer day.

Ice cold, refreshing, and bursting with watermelon flavor. That’s this drink in a nutshell.

Watermelon Slushie - Frozen Watermelon Cubes Blended Until Smooth

To be honest, I rarely drink anything other than water and milk.

I know it’s strange, but ordinarily I’m not a big fan of drinking my calories, as I’d rather eat them.

But when I get my hands on a good watermelon in the summer (check out my tips for How To Pick A Good Watermelon), I make these watermelon slushies an exception.

Watermelon Slushie Recipe - All Natural and made with Lime or Lemon

They’re a frozen treat that’s on the healthier side, as you basically take watermelon cubes, freeze them, and blend up the “watermelon ice cubes” until you get a slushie texture.

That way you’re not diluting any of the watermelon flavor with additional ice.

To easily cut the watermelon into cubes that can be popped into the blender, see my post How to Cut a Watermelon. Enjoy!

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5 from 2 votes

Watermelon Slushies

This simple Watermelon Slushie is easy to make and refreshing on a hot summer day.
Course Drinks
Cuisine American
Keyword watermelon slushie
Prep Time 10 minutes
Freeze Time 2 hours
Total Time 10 minutes
Servings 2
Calories 106kcal


  • 2 cups seedless watermelon diced and frozen for at least 2 hours
  • 2 tbsp simple syrup* optional
  • 2 tbsp lime juice (Meyer lemons are great too)
  • fresh mint for garnish
  • lime slices for garnish


  • Place the watermelon, simple syrup (if using), and lime juice into a blender and pulse until blended. You want to make sure there are no chunks in the mixture, but do not overblend, or else you will warm the drink too much.
  • Pour in a glass and serve immediately, garnished with fresh mint and a lime slice. Enjoy!


*Simple syrup is just equal parts sugar and water, boiled together until the sugar has dissolved. Here is my recipe for Strawberry Simple Syrup. You can add it here as is for an additional fruit flavor, or leave the strawberries out. You may also leave the simple syrup out altogether, if you want only the natural sweetness of the watermelon


Calories: 106kcal | Carbohydrates: 28g | Protein: 1g | Sodium: 13mg | Fiber: 1g | Sugar: 25g

Post updated in August 2019. Originally published April 2011.