Watermelon Lemonade

Easy peasy lemon SQUEEZY! A refreshing summertime sipper bursting with fresh watermelon and bright citrus. Perfect for an afternoon by the pool, to take to the beach, or spike this lemonade for a fun cocktail!

Close up of watermelon lemonade in mason jars with paper straws and citrus squeezer

I don’t know about you, but I can never get enough watermelon in the summertime. Our family goes through a huge melon about every 2 days. And while my preferred method is standing over the counter and slurping it up while I cut a large platter for my kids, occasionally we find other ways to enjoy this quintessential summertime treat.

Sometimes it’s watermelon popsicles. Other times we make a sweet / savory salad. But one of my favorites has to be this lemonade.

Watermelon lemonade in mason jars with paper straws

10 minutes.

4 ingredients (that’s including the water!).

AND you’ve got this ultra-refreshing drink.

Double it for a group (or if you’re like me and when one glass just isn’t enough)… or add your favorite liquor for an adult beverage worthy of chillaxing on the patio. ?

close up of watermelon lemonade in mason jars over ice and paper straws

Any Hints or Tips in making Watermelon Lemonade?

    1. Depending on how sweet your watermelon is, and your desired level of sweetness, you may need more or less sugar syrup. Taste and adjust accordingly.
    2. To get the most juice out of your lemon, roll it on the counter back and forth a few times before cutting and squeezing. You can squeeze it by hand or use a reamer, straining out the seeds, or use a citrus press.
    3. You can make this ahead and refrigerate. The lemonade will keep in the fridge for a few days.

Watermelon lemonade in mason jars with Key Lime Lexi citrus squeezer and lemons in background

Any Ways to Zest Up this Lemonade?

You can spike it with your favorite liquor.

  • Try vodka, tequila, gin or white rum. I’d use about an ounce and a half of liquor per cup of lemonade.

Side view of watermelon lemonade in mason jars with paper straws and lemon wedges

Who’s ready for some fun?

So as a reminder, here’s how it works. Watch this short 5 min. video ? where one of my kids helps me demonstrate a kitchen technique, then we use it to make a YUMMY recipe!


** This is part of the special Key Lime KIDS series, designed to help families during these challenging times by providing entertaining and engaging activities to do at home.

Subscribe to the full Key Lime Kids series on YouTube.

Our goal is to help as many families as possible with our Key Lime KIDS project, so please share this with a friend.



Make Ahead Quick & Easy Mid-Week

Scene on cutting board with watermelon lemonade in mason jars with paper straws and fruit in background
Print Recipe
5 from 2 votes

Watermelon Lemonade

Prep Time10 mins
Servings: 4


  • 4 cups cubed watermelon or 1 pound of watermelon without rind
  • ½ cup fresh squeezed lemon juice
  • 6 tablespoons sugar
  • 1 ¾ cups water divided use


  • In a small saucepan, heat ¼ cup water with the sugar, stirring until the sugar is dissolved. Set aside to cool.
  • Puree the watermelon in a blender. Strain using a wire mesh strainer. You should end up with 1 ½ cups watermelon juice (discard the pulp in the strainer or eat it up!)
  • Combine the watermelon juice, lemon juice, cooled sugar syrup, and remaining 1 ½ cups water. Stir to combine. Pour over ice to serve.

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