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Watermelon Mojito Recipe

This cool and refreshing Watermelon Mojito Recipe is a simple and delicious way to cool off on a hot summer day. If you live here in Florida, you know what I’m talking about!

Made using fresh ingredients, these cocktails provide a beautiful balance of sweet and tangy flavor that puts a delicious spin on a classic mojito.

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Now is the perfect time to try out new drink recipes, whether you’re hanging out with friends or relaxing after a long day.

While you’re in the mood for trying out new cocktail recipes, these Malibu Rum Pina Coladas, Mango Mojito, or Skinny Margaritas are always a hit, too.

It’s always more fun with a fresh fruit cocktail in hand, especially when it’s one of these fresh and delicious Watermelon Mojitos!

This simple and easy recipe takes the classic mint mojito one step further by adding fresh watermelon.

You’ll immediately think of summertime, backyard cookouts, and pool parties.

Fresh lime and the fizz from club soda turn these watermelon mojitos into sipping perfection.  

If you prefer your drinks on the rocks, like these mojitos, you should also check out this awesome collection of some of our favorite On the Rocks Cocktails.

Why We Love This Recipe

Who doesn’t love a refreshing, fruity cocktail? Unfortunately, most recipes use fruit-flavored syrups. Not this recipe!

This cocktail uses fresh cubed and muddled watermelon, mint, and freshly squeezed lime juice.

It’s a super easy recipe calling for 5 simple ingredients, making it the perfect cocktail for last-minute guests.

You can easily turn this recipe into a mocktail for the kids just by leaving out the rum. Even adults will enjoy the refreshing flavors of watermelon and mint without the alcohol on occasion.

What Goes into This Recipe

Ingredients for a Watermelon Mojito.

Key Ingredients:

  • Fresh mint leaves: Mint is the key to really good classic mojito flavors.
  • Simple syrup: The little bit of extra sweetness helps to balance out the tangy lime juice and the fresh mint.
  • White rum: The best watermelon mojitos always use light rum. Dark rum just does not work with the watermelon flavor quite as well.
  • Fresh lime juice: I always recommend juicing fresh limes. It tastes much better than bottled.
  • Club soda: Gives the cocktails the perfect little bit of fizz.

You’ll also need ice cubes for the cocktail shaker and fresh lime wedges for garnish.

See the recipe card for quantities and full directions. 

How to Make this Recipe

Step 1: Place a sprig of mint and simple syrup in the shaker and press down with a muddler to release the juice from the mint.

Step 2: Add 1 cup watermelon cubes to the muddled mint and gently muddle again.

Cocktail shaker with mint and watermelon, glass with ice, cutting board with watermelon and lime.

Step 3: Add light rum, lime juice. Place ice cubes into the glass and stir or use a cocktail shaker and strainer.

Step 4: Pour into glasses filled halfway with ice.

Garnish each fresh watermelon mojito with lime slices and optional sprig of mint.

Two watermelon mojitos in rocks glasses with lime wheel.


  • Watermelon Basil Mojito: Not a fan of mint? I’ve got you! Muddle 5-6 fresh basil leaves in place of the mint. You can also omit any of the green stuff if you prefer.
  • Honey Watermelon Mojito: Instead of using simple syrup, you can use about a tablespoon of organic honey. The honey, mint and juicy watermelon give these cocktails a wonderful flavor. Just be sure to give it a really good shake to ensure the honey isn’t settling on the bottom of the cocktail shakers.
  • Watermelon Cucumber Mojitos: Add even more summer flavors to this watermelon mint mojito recipe by muddling in a couple of thin slices of peeled fresh cucumber.
  • No Added Sugar: Want to use less added sugar in your cocktail recipe? The good news is that if you use a really ripe watermelon, you don’t have to add any sweetener to these cocktails at all. You can also swap out soda water or any sparkling water for the club soda.
  • Batch Mojitos: If you’re serving a crowd, these are great cocktails to make in a batch. Simply multiply the number of servings you need and make it in a large pitcher!


What Can I Serve with Watermelon Mojitos?

You can really drive home the watermelon theme by serving them with your favorite chips and some of this crowd-pleasing Watermelon Salsa.

For a couple of savory appetizers that go well with these drinks, try this delicious Maryland Crab Dip and these Easy Tomato Tarts.

Can I Make These Cocktails in Advance?

These mojitos are best when served freshly shaken. That’s because fresh watermelon puree, when stored in the fridge, will start to separate. You can precut the watermelon cubes and make the simple syrup in advance which will save you some time.

How Do I Make Homemade Simple Syrup?

While you can buy premade simple syrup, it is so easy to make your own. Take one-part boiling water and add one-part white granulated or superfine sugar. Continue to boil until the sugar dissolves completely.

Let the syrup cool to room temperature before using. Store in the refrigerator. preferably in a glass container for up to 3 weeks.

Two watermelon mojitos in rocks glasses with lime wheel.

Top Tips

  • Use cold ingredients. Nobody likes a room-temperature cocktail, so chill all the prepped ingredients in the refrigerator until you’re ready to make them. Chill the glasses in the freezer, too, as this helps keep the drink cooler for longer.
  • Don’t muddle the mint sprigs too far in advance because the longer it sits, the stronger it gets, and it can become bitter-tasting
  • You don’t have to rush out and buy a cocktail muddler if you don’t have one. You can use the back of a wooden spoon and press the ingredients against the side of the shaker or glass.
  • If you don’t have simple syrup and you’re not up to making your own, the next best thing is agave nectar. You’ll use the same amount as you would the simple syrup.
  • Need a shortcut? You can buy watermelon in the produce department at the grocery store that has already been cut up into chunks. Plus, this is a great way to have just the amount of watermelon you need without having to buy a whole one.
  • If you want a super smooth consistency without any of the small watermelon bits, you can add your seedless watermelon chunks to a food processor. Then strain the blended watermelon through a fine mesh sieve.

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Watermelon Mojito Recipe

Watermelon Mojito

A Watermelon Mojito is the quintessential summer cocktail. With a handful of simple ingredients, you'll be enjoying this refreshing beverage in no time!
5 from 1 vote
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Course: Drinks
Cuisine: American
Servings: 1
Calories: 220kcal



  • 1 cup watermelon cubed
  • sprig mint
  • ½ ounce simple syrup
  • 2 ounces rum
  • ¾ ounce fresh lime juice
  • 2 ounces soda
  • lime wheel garnish
  • mint garnish


  • Place mint and simple syrup in shaker and press down with a muddler to release juice from mint.
  • Add 1 cup watermelon chunks. Gently muddle again.
  • Add rum, lime juice, and ice. Shake.
  • Pour into glasses filled halfway with ice.
  • Garnish with lime.


Use cold ingredients. Nobody likes a room temp cocktail, so chill all the prepped ingredients in the refrigerator until you’re ready to make them. Chill the glasses in the freezer, too! It helps keep the drink cooler longer.
You really shouldn’t muddle the mint in advance as it can become bitter tasting.
If you don’t have simple syrup and not up to making your own, the next best thing is agave nectar. You’ll use the same amount as you would the simple syrup.
For a shortcut, buy already sliced watermelon in the produce department or even purchase watermelon juice if you can find it.


Serving: 1 | Calories: 220kcal | Carbohydrates: 24g | Protein: 1g | Fat: 0.2g | Saturated Fat: 0.02g | Polyunsaturated Fat: 0.1g | Monounsaturated Fat: 0.1g | Sodium: 23mg | Potassium: 206mg | Fiber: 1g | Sugar: 20g | Vitamin A: 876IU | Vitamin C: 19mg | Calcium: 18mg | Iron: 1mg
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