This watermelon mojito smoothie is the best way to cool off on a hot summer day. It’s hydrating, refreshing, and easy to make!

watermelon mojito smoothie recipe
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The temperatures jumped up quickly here in Richmond, so I’ve been reaching for smoothies on the regular. While I usually go for a banana and peanut butter combination, the warmer temperatures had me craving something lighter and hydrating. This watermelon mojito smoothie hits the spot!

watermelon mojito smoothie ingredients in a blender

If you’re looking for tips for blending a thick smoothie, check out my tips for making a super thick smoothie. If you’re working with a budget blender, I also have tips for getting the best results from your blender.

The frozen watermelon chunks are a perfect base for this smoothie. The frozen strawberries add sweetness and the coconut water has electrolytes to keep you hydrated on hot days. The lime adds a bit of tang and the mint takes the cooling sensation to the next level.

Bowl of watermelon

Watermelon is also full of lycopene and vitamin C which are anti-inflammatory antioxidants. Thanks to its high water content, it’s actually pretty low in calories. That means it’s nutrient-dense and it tastes amazing, which is a win win!

How to Freeze Watermelon

  • Cut watermelon into 1-inch chunks and remove seeds, if needed.
  • Store it in an airtight container or freezer bag.
  • For even faster smoothies, store one cup of strawberries and one cup of watermelon chunks in small freezer bags so you can make single servings of this smoothie when you’re in a rush!
watermelon chunks in a white dish

Tips & Substitution Ideas

  • When picking out frozen strawberries, be sure to check the ingredients list. Some frozen brands add sugar, but strawberries are plenty sweet on their own! Make sure you get strawberries with no added sweetener.
  • This smoothie was so refreshing on a hot afternoon and it also makes a great cocktail base! Add 4oz of rum and divide into two glasses to make tasty cocktails!
  • If you don’t have coconut water, you can use water or almond milk instead. You may want to reduce the amoount of liquid, so you don’t water down the flavor of the drink. I recommend starting with 1/2 cup and add more if necessary to blend.

If you’re looking for other fun ways to hydrate, try making a mocktail or a glass of orangeade!

watermelon smoothie

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Watermelon Mojito Smoothie

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 9 reviews
  • Author: Liz Thomson
  • Prep Time: 5 minutes
  • Cook Time: 0 minutes
  • Total Time: 5 minutes
  • Yield: 1 smoothie 1x
  • Category: Smoothie
  • Method: Blender
  • Cuisine: American
  • Diet: Vegan


This watermelon mojito smoothie is the best way to cool off on a hot summer day. It’s hydrating, refreshing, and easy to make!


  • 1 cup frozen watermelon chunks (about 810 1” cubes)
  • 1 cup frozen strawberries (about 6 large strawberries)
  • 1 cup coconut water
  • 1 teaspoon lime juice (or to taste)
  • 3 mint leaves (plus more for garnish)
  • Sweetener such as honey or maple syrup (optional, to taste)


  1. Blend everything together until smooth.
  2. If you like a sweeter smoothie, you can add a few drops of stevia or a drizzle of honey.