This Watermelon Slushie is the perfect summer drink! Made with frozen watermelon cubes, fresh lime juice and coconut water for the ultimate refreshing slushie. Works perfectly as a homemade electrolyte drink!
Looking for more refreshing beverages to enjoy this summer? Try my lavender lemonade, mango strawberry banana smoothie, or lemon cucumber mint ginger water.

Recipe Quick Look: Watermelon Slushie
- Ready in: 20 minutes minus the freezing time for the watermelon
- Great for: refreshing homemade electrolyte drink
- Main Ingredients: watermelon, coconut water, lime
- Serves: 4 people
- Difficulty: easy!
- Bonus: easy to make into a cocktail!
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Why I Love This Recipe
Make these slushies for cookouts, 4th of July, Labor Day, Memorial Day or any other summer event!
It's not hard to make and super easy to throw together. If you need more summer holiday recipe ideas, try my Watermelon Feta Orzo Salad. This salty and sweet blend of feta, watermelon arugula and lemon juice creates a zesty and flavorful summer side dish.
How to Freeze Watermelon
Watermelon is made of a ton of water, so it takes it a long time to freeze. Depending on how frozen the watermelon is will determine the consistency of the slushie.
If the watermelon is frozen solid it will be more of a scoopable texture. If the watermelon has only been frozen for around 6hours it'll be thinner and a consistency you can slurp with a straw.
To start - I highly recommend getting a seedless watermelon. Picking out the seeds takes wayyy too much time!
I use a medium or average-sized watermelon to get 8 cups. Chop it up into cubes and aside in a bowl.
What method of freezing is totally up to you. You can freeze it on a baking sheet to prevent the watermelon from freezing into a block.
However, 8 cups is a lot of baking sheets of watermelon. So, I usually just toss it all into a large container.
If you let it feeze overnight or for 24hrs it will freeze into a block - but that's okay! Just take the watermelon out to defrost before you want to make the slushies.

Twists and Variations
This recipe is super simple:
- watermelon
- lime juice
- coconut water
You can easily change it up by swapping the coconut water for pineapple juice, mango juice or whatever tropical juice you want to try.
Trade the lime juice for lemon or grapefruit juice.
Garnish with a slice of citrus and fresh mint for a refreshing drink!
Make the Slushie a Cocktail!
Want a watermelon cocktail? Just add a shot of coconut rum to your slushie and done!
Recipe Tips and FAQs
It can! But you'll want to remove the seeds before freezing the watermelon chunks, and that takes a lot of work and time, so seedless watermelons are definitely best.
If you freeze it overnight or for 24hrs it'll freeze solid and need to defrost for a bit before you use it in the recipe. The consistency will be thick and scoopable with a spoon. If you want a slushie that is slurpable with a straw try freezing the watermelon for just 6-8 hours.
More Summer Holiday Recipes
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Watermelon Slushie
Ingredients
- 8 cups frozen cubed seedless watermelon
- ½ cup coconut water
- ¼ cup lime juice
Instructions
- Chop a seedless watermelon into chunks and freeze.
- Freeze for at least 6 hours or overnight.
- If freezing for 24 hours or longer, the watermelon will freeze into a block. Before moving on to the next step, take the watermelon out to defrost a bit and make it easier to break up into pieces.
- Add the frozen watermelon, lime juice and coconut water to the food processor or blender and blend until smooth.
- If the consistency is too thick, add water or more coconut water to help get the consistency you desire.
- Garnish with mint and fresh lime and enjoy!
Notes
- Depending on how frozen the watermelon is will determine the consistency of the slushie. If the watermelon is frozen solid it will be more of a scoopable texture. If the watermelon has only been frozen for around 6-8 hours it'll be thinner and a consistency you can slurp with a straw.
- If frozen solid, you may need more liquid like water or coconut water to help thin it out. Letting the watermelon defrost before blending will help as well.
- Made it a cocktail by adding a shot of coconut rum.
Nutrition
(Nutrition values are calculated by third-party software and an estimate that can vary based on product brands and cooking methods.)












Monica Nedeff says
I love how versatile this recipe is and how easy it is to change up! Sometimes I add mint to the blender to really add in the mint flavor!