These Watermelon Mojitos are incredibly easy to make, only 5 ingredients and are a perfect refreshing, minty summer cocktail!

Two glasses of watermelon mojitos with sprigs of mint in them.

Back at it again with another Watermelon recipe, but hey – remember we are preparing for summer, okay? Also, it’s the WEEKEND so you’re going to need a great cocktail to celebrate. During our fun filled pre-Memorial Day celebration BBQ filled with amazing grilled veggies, I made the bold declaration that I was going to make Watermelon Mojitos for the first time, completely untested and went ahead and used ALL of the watermelon in the house on the first go.

Now completely aware that this could end in total failure, I went forth brave (foolish?) and whipped this recipe together. The very first comment from my bestie was “I hope you wrote down exactly what you did for this recipe, because YUM – this is a keeper.” 

Close up of a watermelon mojito in a tall glass with a sprig of mint.

I’ve been a watermelon addict all my life, and have found that anything it goes into – popsicles, by itself, a sorbet, a salad, the list goes on – it all comes out pretty perfect. Watermelons themselves are so versatile and refreshing in nature that they give that effect to anything and everything they are added to. Case in point – these shining watermelon mojitos.

Sliced watermelon on a wooden board.

Sure, mojitos are great all by themselves thanks to the magic of mint, and well, rum. What happens when you add juicy, sweet and fruity watermelon to the mix? You may as well be automatically transported to a tropical (hey!) island on the beach, sipping on these watermelon mojitos while gazing into the deep, clear blue sea. That immediate imagery is incredibly tempting, and something I kind of need to do like yesterday, but that’s exactly how you’ll feel after you sip on this.

Now, I’m not trying to say that a cocktail drink will give you amazing health benefits, but it does help with watermelon is 90% water, is also loaded with vitamins A, B6 and C, antioxidants and amino acids among other great benefits. This drink is so refreshing and will definitely help with the summer heat.

P.S. While I did add natural homemade simple syrup, I would definitely taste the drink before adding the simple syrup and adjust based on how sweet your watermelon is.

 Top down shot of watermelon mojitos on a white table top.

Look out summer, here we come! I know, super lame ending, but it sounded really preppy AND cool in my head. I’ll just stick to creating the yummy recipes, yah?

Two tall glasses of mojito on a white table.



Instagram Jessica in the Kitchen

If you try these Watermelon Mojitos please let me know in the comment section below, or tag me on instagram with the hashtag #jessicainthekitchen! For more exclusive recipes follow me on Instagram.


Two watermelon mojitos with pitcher on wood board

Watermelon Mojitos

These Watermelon Mojitos are a refreshing, minty summer cocktail that’s incredibly easy to make.
5 (from 3 ratings)


  • 1/2 a medium size watermelon, about 4 lbs watermelon, seeds removed and cut into chunks
  • 1/3 cup freshly squeezed lime juice
  • 3/4 cup to 1 cup white rum
  • 20-30 fresh mint leaves, muddled
  • 1/2 cup simple syrup*, see notes for how to make it


  • Add your watermelon chunks to a food processor or high speed blender until smooth, about 30 seconds to 1 minute in the food processor or in the blender.
  • Pour the pureed watermelon into a large pitcher and add in the lime juice, muddled mint leaves and stir. Add in the white rum. Stir vigorously for about 15-30 seconds to incorporate.
  • Taste and add the appropriate amount of simple syrup based on the sweetness of your watermelon, up to ½ cup simple syrup, and stir again.
  • Pour into an ice filled glass and enjoy!


  1. This recipe is vegan and gluten free. I’ve used both a Jamaican Appleton White Rum and a Brazilian White Rum, so any white rum should be fine! If your watermelon has seeds, you should remove the seeds. Alternatively, you could strain the watermelon but you will miss that cool refreshing watermelon taste.
  2. You can make the simple syrup by boiling ½ cup sugar (cane sugar, brown sugar, coconut sugar or any granulated sugar) with ½ cup water until completely liquid, stirring often. Cool it down, then measure it out! This makes a bit more than ½ cup simple syrup, closer to ¾ cup, so use as much or as little of it as you want depending on the sweetness of your watermelon.
    You can store this Mojito recipe in the pitcher in the fridge for several days.
  4. Feel free to add more or less rum!
Calories: 316kcal, Carbohydrates: 61g, Protein: 3g, Fat: 1g, Saturated Fat: 1g, Sodium: 26mg, Potassium: 567mg, Fiber: 2g, Sugar: 53g, Vitamin A: 2730IU, Vitamin C: 43mg, Calcium: 48mg, Iron: 2mg

Disclaimer: Although attempts to provide accurate nutritional information, kindly note that these are only estimates. Nutritional information may be affected based on the product type, the brand that was purchased, and in other unforeseeable ways. will not be held liable for any loss or damage resulting for your reliance on nutritional information. If you need to follow a specific caloric regimen, please consult your doctor first.


Pineapple Coconut Rum Cocktail

Rose Sangria

These Watermelon Mojitos are incredible easy to make, only 5 ingredients and are a perfect refreshing, minty summer cocktail!