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a Watermelon Cocktail in a cosmopolitan glass with watermelon balls and lime slices.

Watermelon Summer Splash Cocktail

Cool down this Summer with this Watermelon Summer Splash Cocktail that is sweet, fruity, and summery! Fresh Watermelon Juice, Tequila, and Moscato are shaken to pure perfection. THE BEST flavor combo, so refreshing! 
Course Drinks
Cuisine American
Prep Time 5 minutes
Total Time 5 minutes
Servings 2 cocktails
Calories 208kcal


For 2 cocktails:

  • 3 oz (90 ml) tequila
  • 6 oz (180 ml) Moscato wine
  • 1/2 cup (120 ml) fresh watermelon juice (see notes)
  • 3 teaspoons (15 ml) simple syrup (or more to taste - see notes)
  • Ice

For a Pitcher:

  • 1 bottle (750 ml) Moscato wine
  • 1/2 cup (120 ml) Tequila
  • 2 cups (480 ml) watermelon juice (see notes)
  • 1/4 cup (60 ml) simple syrup (see notes)
  • Ice

To Garnish (optional):

  • Slices of Lime
  • Watermelon Balls
  • Kosher or Himalayan salt for rimming the glass (I used Himalayan salt )


Make Two Cocktails:

  • Add tequila, Moscato, watermelon juice, and simple syrup to a cocktail shaker filled with ice; shake well. NOTE: Taste, and if you would like it to be sweeter, stir in 1/2 teaspoon more of simple syrup until the mix reaches your desired level of sweetness. 
  • Shake and strain into glasses.
  • Serve immediately, garnished with lime slices and watermelon balls, if desired.

Make a Pitcher:

  • Place the Moscato, tequila, watermelon juice, simple syrup, and ice in a large pitcher, and stir to combine. Add lime slices and watermelon balls, if desired. Let sit for 5 minutes to allow for some of the ice to melt and mellow the cocktail. NOTE: Taste, and if you would like it to be sweeter, stir in more of simple syrup until the mix reaches your desired level of sweetness. 
  • Pour into glasses, adding more ice from the pitcher to each glass as needed. Scoop a couple of lime slices and watermelon balls into each glass when serving.


  1. Cut the watermelon into chunks removing the rind and seeds. Place the chunks into a bowl and let them cool in the refrigerator for 1-2 hours.
  2. In a blender, place watermelon and blend until smooth.
  • 1/2 cup water
  • 1/2 cup granulated sugar
In a small saucepan, bring water and sugar to a boil; simmer until the sugar is dissolved, 2-3 minutes. Remove from the heat and let cool completely. Simple syrup will keep refrigerated for about a month.
WATERMELON BALLS: To make the watermelon balls insert the melon baller into the watermelon flesh. Rotate the baller around to get a sphere of watermelon and pop it into a bowl
To rim the glass with salt, just rub the outside rim of the glass with a cut lime and dip the glass lightly into a plate with salt.
If you're making this recipe, please read the whole post content to get lots of tips, tricks, variations, frequently asked questions, and step-by-step photos.
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Please note that nutritional information is a rough estimate, and it can vary depending on the products used.


Calories: 208kcal | Carbohydrates: 15g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Sodium: 7mg | Potassium: 43mg | Fiber: 1g | Sugar: 10g | Vitamin A: 215IU | Vitamin C: 3.1mg | Iron: 0.5mg