Watermelon Smoothie

This easy Watermelon Smoothie recipe is a refreshing, creamy fruit smoothie made with frozen watermelon, coconut milk, Greek yogurt, fresh lime juice, and honey. Ready in just 5 minutes, this homemade watermelon smoothie is perfect for a quick breakfast, healthy snack, or delicious summer drink!

This Watermelon Smoothie is one of my favorite quick and easy summer drinks! Made with frozen watermelon, coconut milk, Greek yogurt, lime juice, and a little honey, it’s cold, creamy, refreshing, and SO delicious! And the best part? You only need five simple ingredients and about five minutes to make it!

I don’t know about you, but one of my favorite things about summer is fresh watermelon. It’s sweet, juicy, refreshing, and always seems like a great idea when I’m at the grocery store.

The problem? No matter how many times my kids tell me they WANT a watermelon, we almost always have some left over. Every. Single. Time.

Rather than letting all that delicious fresh watermelon go to waste, I started cutting the leftovers into cubes and freezing them. And let me tell you, frozen watermelon is AMAZING for smoothies. It makes the smoothie cold and thick without needing a bunch of ice. Plus, I love having frozen watermelon ready for homemade cocktails, mocktails, watermelon juice, and other refreshing drinks.

This easy watermelon smoothie recipe combines frozen seedless watermelon with unsweetened coconut milk, plain Greek yogurt, fresh lime juice, and honey. The watermelon gives it a delicious sweet fruit flavor, the Greek yogurt makes it creamy, and the lime juice adds just enough tartness to balance everything out.

If you’re looking for more refreshing smoothie ideas, check out my collection of Smoothie Recipes.

And if you love watermelon as much as I do, don’t miss my fun Watermelon Poptini cocktail with a secret ingredient that actually pops in your mouth!

But back to this easy Watermelon Smoothie. It’s simple, refreshing, naturally colorful, and perfect for breakfast, an afternoon snack, or cooling off on a hot summer day.

What I Love About This Recipe

• It’s quick and EASY! This homemade Watermelon Smoothie recipe takes only about five minutes to make. Just add everything to a blender and blend until smooth. No cooking, complicated ingredients, or fancy techniques required. Perfect when you need a quick breakfast or afternoon snack!
• It’s a great way to use leftover watermelon. Somehow we always end up with extra watermelon in the refrigerator. Instead of wasting it, I cut it into cubes and freeze it for smoothies and other drinks. Frozen watermelon keeps this smoothie cold and refreshing without watering it down with lots of ice. Plus, having frozen fruit ready makes smoothie time SO much easier!
• It’s creamy without being too heavy. The Greek yogurt gives this fruit smoothie a nice creamy texture, while the coconut milk adds a subtle tropical flavor. The frozen watermelon keeps everything light, fruity, and refreshing. It’s a delicious combination that’s especially good on a hot summer day!
• You can customize it a million ways. Add strawberries for a watermelon strawberry smoothie, banana for extra creaminess, or pineapple for a tropical watermelon smoothie. You can even toss in some fresh mint, cucumber, or spinach. It’s a great recipe for experimenting with your favorite fruit and smoothie ingredients.
• It’s perfect for breakfast or a snack. This easy watermelon smoothie makes one serving, so it’s great when you want something quick just for yourself. Greek yogurt adds some protein, while watermelon gives the smoothie a naturally sweet fruit flavor. You can also double or triple the recipe if you’re making smoothies for the whole family. This smoothie is naturally gluten-free but as always, double-check your specific ingredients and brands to be sure.

Equipment You May Need

• Blender – A strong blender works best for breaking down frozen watermelon cubes and creating a smooth, creamy drink.
• Measuring Cups and Spoons – For measuring the watermelon, coconut milk, Greek yogurt, lime juice, and honey.
• Cutting Board – For cutting fresh watermelon into cubes before freezing.
• Sharp Knife – Makes it easier to cut watermelon into evenly sized pieces.
• Baking Sheet – Useful for freezing watermelon cubes in a single layer so they don’t stick together.
• Silicone Baking Mat – Helps keep the watermelon cubes from sticking to the baking sheet while freezing.
• Freezer-Safe Bags or Containers – For storing frozen watermelon cubes until you’re ready to make smoothies.
• Citrus Juicer – Optional, but handy for squeezing fresh lime juice.
• Rubber Spatula – Helpful for scraping down the blender if ingredients get stuck. Always turn off the blender first!
• Smoothie Glass – For serving your finished Watermelon Smoothie.

Watermelon Smoothie Ingredients

• Frozen Watermelon Cubes – The star of the recipe! I recommend ripe, seedless watermelon cut into small cubes and frozen ahead of time. Frozen watermelon makes the smoothie thick, icy, and refreshing.
• Unsweetened Coconut Milk – Adds liquid to help everything blend and gives the smoothie a subtle tropical flavor. You can substitute regular milk, almond milk, oat milk, or another favorite milk. I use unsweetened coconut milk so I can control the sweetness.
• Unsweetened Plain Greek Yogurt – Makes the smoothie creamy and adds some protein. Greek yogurt is generally thicker than regular yogurt, so it helps give this watermelon smoothie a richer texture. You can use sweetened or flavored yogurt if you prefer, but you may want to adjust the honey.
• Fresh Lime Juice – Adds a bright citrus flavor that balances the sweetness of the watermelon. Freshly squeezed lime juice is my favorite, but you can substitute lemon juice or orange juice.
• Honey – Adds a little extra sweetness. Depending on how sweet your watermelon is, you may want more or less honey. You can also use another favorite sweetener or leave it out altogether.

How to Freeze Watermelon

If you’ve never frozen watermelon before, don’t worry. It’s SUPER easy! And it’s one of my favorite ways to use up leftover watermelon. Here’s how I do it.

Step One: Choose Your Watermelon
Start with a ripe, seedless watermelon. If you’re using a watermelon with seeds, remove the large hard black seeds before freezing.

Step Two: Cut Into Cubes
Remove the rind and cut the watermelon into small to medium cubes. Try to keep the pieces about the same size so they freeze evenly. Smaller cubes are also easier for most blenders to process.

Step Three: Arrange on a Baking Sheet
Place the watermelon cubes in a single layer on a baking sheet lined with a silicone baking mat. Leave a little space between the pieces so they don’t freeze together in one big clump.

Step Four: Freeze the Watermelon
Place the baking sheet in the freezer for a few hours or until the watermelon cubes are frozen solid.

Step Five: Transfer to a Freezer Bag
Once frozen, transfer the watermelon cubes to a resealable freezer-safe bag or airtight container. Remove as much air as possible before sealing and store in the freezer until ready to use.

That’s it! For the best quality, I recommend using frozen watermelon within about 2-3 months. I love having bags of frozen watermelon ready for smoothies, homemade watermelon juice, cocktails, and mocktails.

How to Make a Watermelon Smoothie

Making this easy Watermelon Smoothie couldn’t be much simpler! Once you have frozen watermelon ready, the whole recipe takes about five minutes.

Step One: Blend the Watermelon Smoothie
Place the frozen watermelon cubes, unsweetened coconut milk, plain Greek yogurt, fresh lime juice, and honey in a strong blender. Process until completely smooth, adding a small splash of extra coconut milk if needed to help the blender. Taste and adjust the honey to your preference, then pour into a glass and serve immediately while cold and refreshing!

(Full printable recipe card is at bottom of post.)

Watermelon Smoothie Variations

One of the best things about this simple watermelon smoothie recipe is how easy it is to customize. The recipe is delicious as written, but here are some fun ideas if you want to change things up. These are optional variations and have not been tested, so start with small amounts and adjust to taste.

• Watermelon Strawberry Smoothie – Add fresh or frozen strawberries for a sweet, fruity combination. Frozen strawberries will also help thicken the smoothie.
• Watermelon Banana Smoothie – Add a little ripe or frozen banana for extra creaminess and natural sweetness. Banana has a stronger flavor than watermelon, so start with a small amount.
• Watermelon Pineapple Smoothie – Add fresh or frozen pineapple for a tropical watermelon smoothie. Pineapple tastes delicious with coconut milk and lime.
• Watermelon Mango Smoothie – Add frozen mango for a thicker, sweeter tropical fruit smoothie.
• Watermelon Mint Smoothie – Add a few fresh mint leaves for a cool, refreshing flavor. Start with just a few because mint can be strong.
• Watermelon Cucumber Smoothie – Add peeled cucumber for an extra refreshing drink. Cucumber contains a lot of water, so the smoothie may become thinner.
• Watermelon Spinach Smoothie – Add a small handful of baby spinach for a green smoothie. You can also experiment with kale, although it has a stronger flavor.
• Watermelon Blueberry Smoothie – Add fresh or frozen blueberries for a berry-flavored smoothie with a deeper pink or purple color.
• Watermelon Raspberry Smoothie – Add raspberries for a sweet and slightly tart flavor. You may want to strain the smoothie if you don’t like raspberry seeds.
• Watermelon Peach Smoothie – Add fresh or frozen peaches for a sweet summer fruit combination.
• Watermelon Kiwi Smoothie – Add a little peeled kiwi for a tangy tropical flavor.
• Watermelon Apple Smoothie – Add a small amount of chopped apple. A strong blender works best for a smooth texture.
• Watermelon Orange Smoothie – Substitute fresh orange juice for the lime juice for a sweeter citrus flavor.
• Watermelon Lemon Smoothie – Use fresh lemon juice instead of lime juice for a bright, refreshing variation.
• Watermelon Lemonade Smoothie – Replace some of the coconut milk with chilled lemonade for a sweeter, tangier summer drink. You may not need the honey.
• Watermelon Coconut Smoothie – Use richer coconut milk or add a little unsweetened shredded coconut for more coconut flavor.
• Watermelon Ginger Smoothie – Add a tiny amount of fresh grated ginger for a little zing.
• Watermelon Cantaloupe Smoothie – Combine watermelon with fresh or frozen cantaloupe for a refreshing melon smoothie.
• Watermelon Grape Smoothie – Add frozen seedless grapes for extra sweetness.
• Watermelon Protein Smoothie – Add extra Greek yogurt or experiment with vanilla or unflavored protein powder. You may need more liquid depending on the protein powder.

Serving Suggestions

This refreshing Watermelon Smoothie is delicious all by itself, but you can also serve it with breakfast, snacks, or other summer favorites.

• For Breakfast – Pair with eggs, toast, oatmeal, or your favorite breakfast sandwich.
• With Muffins – Serve with my Almond Flour Muffins for an easy breakfast or snack.
• For an Afternoon Snack – Enjoy on a hot day when you want something cold, fruity, and refreshing.
• With Fresh Fruit – Serve with strawberries, blueberries, pineapple, or a fresh fruit salad.
• With Yogurt and Granola – Pair with a yogurt parfait if you’d like a more substantial breakfast.
• At a Summer Party – Make a larger batch and serve in small glasses for a refreshing nonalcoholic drink. For a fun garnish, add a small watermelon wedge, lime slice, or fresh mint sprig to the glass.
• With Brunch – A pretty pink watermelon smoothie makes a fun addition to a brunch table.
• After School – A delicious homemade fruit smoothie for kids and adults.
• With Popcorn – Pair with my Italian Popcorn for a fun sweet-and-salty snack.
• As a Frozen Treat – Pour the smoothie into popsicle molds and freeze for a different way to enjoy it.

Quick Tips for Best Results

• Use frozen watermelon. It creates the best thick, icy texture without adding lots of ice.
• Choose ripe, seedless watermelon. Sweet watermelon gives the smoothie better flavor and makes preparation easier.
• Keep the ingredients cold. Chilled coconut milk and yogurt help the smoothie stay cold and refreshing.
• Use a strong blender. A high-powered blender makes processing frozen watermelon easier.
• Cut watermelon into small cubes before freezing. Smaller pieces are easier to blend.
• Add the liquid first if needed. Some blenders process frozen fruit more easily when the liquid ingredients are at the bottom.
• Don’t add too much liquid. Watermelon already contains a lot of water, so start with the amount in the recipe.
• Use thick Greek yogurt. It helps create a creamier watermelon smoothie.
• Adjust the honey to taste. Some watermelons are sweeter than others, so you may not need all the honey.
• Try other sweeteners. Maple syrup, agave, or another favorite sweetener can work.
• Use fresh lime juice. Freshly squeezed citrus juice adds a bright flavor.
• Add more frozen fruit for thickness. Frozen strawberries, banana, mango, or pineapple can help thicken the smoothie.
• Add liquid slowly if the blender struggles. A little extra coconut milk can help everything process smoothly.
• Stop the blender before stirring. Never put a spoon or spatula into a running blender.
• Blend until smooth. Keep blending until the frozen watermelon is completely broken down.
• Serve immediately. The smoothie tastes best while it’s cold and thick.
• Freeze leftovers in ice cube trays. You can blend the cubes again later for a quick frozen drink.
• Double the recipe for more servings. This recipe makes one smoothie, but you can easily scale it up if your blender has enough capacity.

Watermelon Smoothie FAQ

How should I store this Watermelon Smoothie?
I recommend drinking this smoothie right after making it because it tastes best when it’s cold, thick, and freshly blended. If you need to store it, keep it covered in the refrigerator and drink it as soon as possible, preferably within 24 hours. The smoothie may separate or become thinner, so stir or blend it again before serving.

Can I freeze a Watermelon Smoothie?
Yes! Pour the finished smoothie into ice cube trays or freezer-safe containers and freeze. Once frozen, transfer the smoothie cubes to a freezer-safe bag if desired. When you’re ready for another smoothie, blend the frozen cubes with a splash of coconut milk or let them thaw slightly.

Substitutions?
You can substitute regular milk, almond milk, oat milk, or another favorite milk for the coconut milk. Regular yogurt, vanilla yogurt, or dairy-free yogurt can replace the Greek yogurt, although the texture may change. Lemon juice or orange juice can replace the lime juice. You can also substitute another favorite sweetener for the honey or leave it out.

Can I use low-fat ingredients?
Absolutely! You can use low-fat or nonfat Greek yogurt, regular low-fat yogurt, or another yogurt you enjoy. Just keep in mind that thicker yogurts usually make a creamier smoothie. The flavor and consistency may vary depending on the ingredients you choose.

What else can I add to this recipe?
There are SO many possibilities! Try banana, strawberry, pineapple, mango, peach, blueberries, raspberries, kiwi, apple, grapes, or cantaloupe. For a green smoothie, add spinach, kale, or cucumber. You can also experiment with fresh mint, ginger, coconut, or a little extra citrus juice.

Can I use fresh watermelon instead of frozen?
Yes fresh watermelon works, but the smoothie will be thinner because watermelon contains so much water. You may want to add some ice or another frozen fruit to help thicken it. I prefer frozen watermelon because it makes the smoothie colder and creamier without watering down the flavor.

Other Smoothie Recipes You May Enjoy

If you love this easy Watermelon Smoothie, be sure to check out some of my other homemade smoothie recipes!

• Tropical Smoothie – An easy homemade smoothie with mango, pineapple, and banana.
• Mango Pineapple Smoothie – A delicious fruity smoothie with tropical flavors.
• Chocolate Smoothie – A fun chocolate mock shake that’s a lighter alternative to a traditional milkshake.

Hope you enjoy this quick and easy delicious Watermelon Smoothie! Tell me in the comments how you changed it up!

Serve this Watermelon Smoothie by itself or with your favorite breakfast or snack like these Almond Flour Muffins or Italian Popcorn.