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My Watermelon Agua Fresca is a summer favorite around here. Nothing but watermelon juice, fresh lime juice and some Lakanto monk fruit sugar substitute. It is light and refreshing and perfect to quench your thirst on a hot summer day. Serves with wedges of watermelon and lime, what’s not to love?

I make a lot of agua frescas in the summer. They are really just the essence of fruits and vegetables and not only delicious but good for you too. Try my Cucumber & Lime Agua Fresca too.

This is a really easy drink to make too. In a blender, simply add the watermelon chunks, water, lime juice and Lakanto monk fruit and blend on high until smooth. BTW, feel free to use another sugar substitute or real sugar if you prefer. I just really like Lakanto and the fact that there is no after taste. I eliminate added sugar but get great taste. That is a win-win for me.

Once smooth, I strain the liquid through a fine mesh strainer to remove the pulp. Discard the pulp and put the remaining liquid in a large pitcher. Refrigerate for at least two hours to get it really chilled.

Add ice to a glass, top with the beverage and garnish with the watermelon wedge and lime wheel and enjoy. Summer in a glass.

BTW, I strain this mixture to remove any of the solids but you can just keep the pulp in the drink… this is totally based on your preference.

This is such a pretty drink that it works great as a mocktail during happy hour and is perfect with brunch.

Looking for other mocktail recipes? Try some of my favorites:

Cold brew, Cherry and Almond Delight

Arnold Palmer

Basic Bloody Mary Mix

Homemade Hot Chocolate Mix

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CHAT GPT CLAUDE GEMINI PERPLEXITY GROK

Watermelon Agua Fresca

In a blender, mix together the watermelon, water, the lime juice and the sugar substitute on high until smooth.

5 from 2 votes

Prep Time 5

Cook Time 5

Total Time 10

Course Drinks, Mocktails

Cuisine General

Servings Cups

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.

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Ingredients

▢ 4 Cups Ripe seedless watermelon, rind removed and cut into chunks
▢ 3 Cups Water
▢ 3 Tsp. Fresh lime juice from one large lime
▢ 1 Tbsp. Swerve or Lankato Monk fruit sugar substitute
▢ Lime slices and watermelon wedges to garnish, optional

Instructions

In a blender, mix together the watermelon, water, the lime juice and the sugar substitute on high until smooth. Strain through a strainer into a large pitcher. This is optional. You do not have to strain. Refrigerate for at least two hours and up to 24 hours. Serve straight up or on ice garnished with slices of line and/or watermelon.

Keyword mocktails

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Diane Ringler

Recipe Developer

With over 10 years of restaurant experience, Diane has been cooking and developing recipes for over five years, focusing on real-food meals for two that are Weight Watchers-friendly and high in protein. A longtime WW member herself, she brings firsthand experience to every recipe — not just culinary technique, but the practical knowledge of someone who has navigated points, portions, and satisfaction for years. Her recipe for Lollipop Lamb Chops with Pistachio Pesto was selected as a KitchenAid contest winner and published in Taste of Home's "Innovate Your Plate" bookazine. She has developed recipes and created content for brands including Eggland's Best, Sprouts Market, ZenB Pasta, Flannery Beef, The Honey Jar and Marukan Vinegar. She has been cooking for two for 10 years and her recipes focus on well balanced meals that are healthy, protein-focused meals perfectly proportioned for two servings. Based in Southern California she loves fresh, seasonal produce and proteins that nourish the body and soul.