watermelon mojito

This watermelon cocktail is a fruity and refreshing twist on the classic mojito! Start by muddling the watermelon in the bottom of a glass, then mix together rum, fresh mint leaves, lime juice and a quick and easy honey simple syrup. Top with club soda and you’ve got the perfect summer cocktail!

originally published 8.6.2020

Is there anything better than fresh watermelon on a hot summer day? It’s juicy, incredibly refreshing and, as it turns out, the perfect addition to the classic mojito! 

The inspiration behind this watermelon mojito began with looking for ways to use up the gigantic watermelon in my kitchen. After making this summer salad with feta and watermelon, I had just enough leftover to create a few watermelon mojitos. This bright and fruity rum cocktail is infused with sweet watermelon, fresh mint leaves and citrusy lime juice. You’ll be transported to a tropical getaway with the first sip!

watermelon mojito with mint and lime

refreshing watermelon mojito

Making this watermelon mojito couldn’t be easier! Start by cutting the watermelon into cubes and muddle them in the bottom of a glass. Then mix together rum, fresh mint leaves, lime juice, ice and a bit of simple syrup in a cocktail shaker, pour it over the watermelon and top with club soda. It takes just minutes!

As for the simple syrup, I went with a super easy version. You’ll always find a jar or two of honey in my kitchen, so honey simple syrups are my go-to for sweetening cocktails. Generally my honey is runny enough that I can stir it together with hot water and it will form into a smooth mixture. If your honey is a bit thicker, you might need to warm the concoction together over the stove. Either way, your syrup is finished in minutes and ready to be used in all sorts of cocktails!

cubed watermelon and mint for mojito

mix it up!

While fresh watermelon is a great addition to summer cocktails when it’s in season, you can make mojitos with all types of fruit! The below recipe will work with almost any fruit that can be muddled — pineapple, strawberries, blueberries — the options are endless! If you decide to go with a tart fruit, such as raspberries, try muddling them with a bit of sugar to make sure your mojito is nice and sweet.

Try these other refreshing boozy treats to beat the summer heat!

watermelon mojito with mint and lime

watermelon mojito

serves: 1 prep time:
Rating: 5.0/5
( 1 voted )


for one cocktail
  • seedless watermelon 5 cubes
  • (approximately 1-inch / 2.5-cm cubes)
  • mint 5 leaves
  • rum 60 ml (2 oz)
  • lime juice 30 ml (1 oz)
  • honey simple syrup 30 ml (1 oz)
  • (recipe for honey simple syrup below)
  • club soda to top
honey simple syrup*
  • honey 125 ml (½ c)
  • water 125 ml (½ c)


  1. Muddle the watermelon in the bottom of a glass.
  2. Add mint, rum, lime juice, honey simple syrup and ice to a jar or cocktail shaker and shake well.
  3. Pour over the muddled watermelon and top with club soda.
  4. Garnish with extra mint leaves and lime wedges if desired.
honey simple syrup
  1. Mix equal parts honey and hot water and stir until honey dissolves.
  2. Cool to room temperature and store in an airtight container for up to two weeks.


    honey simple syrup: You can make as much or as little simple syrup as you want - just make sure to use equal parts honey and water!

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