Watermelon Margaritas are easy to make, slightly sweet, and oh so summery! All you need to make this fruity margarita is fresh watermelon juice, tequila, Cointreau, freshly squeezed lime juice, and just a touch of agave. If you’re a fan of salty and sweet in a perfectly balanced sip, top your glass off with a salt rim and thank me later.

Watermelon Margarita

There’s something especially delicious about margaritas with a fruity finish! Think the Peach Margarita, Strawberry Margarita, and Mango Pineapple Margarita. These easy Watermelon Margaritas are no exception! Serve them at your next party, because this cocktail is the ultimate crowd pleaser.

The key to a perfect Watermelon Margarita lies within the fresh juice. Trust me, watermelon flavored syrups will NOT yield the same results that the real deal! Fresh watermelon juice not only creates the best watermelon flavor in the cocktail, but it also mixes with the agave to create a natural sweetness that’s sure to hit the spot.

If you’re not a fan of overly sweet drinks, you’ll love this margarita. It’s got a subtle sweetness that you can easily control with the amount of agave you add.

Even if you’re not making margaritas for the crowd, go ahead and make the batch of watermelon juice! You can easily store it in the fridge or freezer and pull it out when you need it. If you want to enjoy it through the weekend, store it in the fridge. For longer storing, pop it into the freezer.

How to Make a Watermelon Margarita

Ingredients You’ll Need:

Watermelon Juice – To make this fresh juice, you’ll need to cube fresh watermelon and make sure there’s no rind left.
Resposado Tequila – great, aromatic, and flavorful tequila to use, try it!
Cointreau – This orange flavored liqueur adds a little more alcohol content to the drink and a delicious extra note of smooth, fruity flavor.
Lime Juice – For the BEST flavor, make sure you’re only using freshly squeezed lime juice. Bottled lime juice will not taste the same.
Agave Nectar – You can add more or less agave to control the sweetness of the drink. Keep in mind that the watermelon juice is already sweet, so you may not want to be too heavy handed with this sweetener.

watermelon chunks in a bowl next to the blender

straining watermelon juice into measuring glass

How to make the watermelon juice:

Cut the watermelon into cubes and discard the rinds. You need a little over 1 lb. of watermelon chunks (without the rinds) for this cocktail recipe.

Blend the watermelon cubes until you have a totally smooth puree with no chunks.

Strain the puree through a fine mesh strainer. You can use a spoon to help push the juices through the strainer.

pouring tequila into the cocktail shaker

pouring the Cointreau into the cocktail shaker

pouring in lime juice into the cocktail shaker

pouring the watermelon juice into the shaker

Make the margaritas:

This step is optional, but highly recommended – rim your glass! Rub a lime along the edge of your glass and dip it in salt. You can use sugar if you’d prefer a sweeter sip, but I love the contrast of the salty and sweet watermelon flavors.

Add ice, reposado tequila, Cointreau, watermelon juice, lime juice, and agave nectar to your cocktail shaker.

Shake vigorously for about 20 seconds.

Add some ice to your glass. Pour the margarita through a strainer into the glass. You can choose to use the dirty ice (ice from the strainer) instead if preferred.

pouring the watermelon margarita into the glass

Frequently Asked Questions

What is reposado tequila?

“Reposado” means “rested” in Spanish, which basically means that this type of tequila is rested anywhere from two months to a year before it’s bottled. The golden color of this tequila comes from the barrels where it’s rested, and it also really takes in that flavor.

With reposado tequila, you get a smoother finish, hints of vanilla, and toasty, earthy notes from the barrel itself. Reposado tequila gives you the best of both worlds: the complexity of aged tequila, and the yummy flavor of young silver tequila!

How much juice does a watermelon yield?

Watermelons are about 90% liquid, so it’s easy to tell how much you’ll be getting. Weight the watermelon chunks without the rind to measure how much liquid you’ll be getting. When I’m picking the size of the watermelon to purchase, I estimate that a 6-8 lb watermelon will provide me with 5-7 cups of fresh watermelon juice.

Can I store watermelon juice?

Yes, and it’s easy to do! When storing watermelon juice in the fridge, I recommend using a glass jar with a lid that’s not made of metal. Metal tends to react badly when stored with foods that have acidic elements. These are the jars that I use at home (this is not an affiliate link): with coated lids and with hinged lids.

When properly stored in an airtight container in the fridge, watermelon juice will stay fresh for anywhere between 5-7 days. Want to keep it fresh for even longer? Freeze it! Simply pour the watermelon juice into a freezer safe zip-top bag. Date and label it, then pop it in the freezer where it’ll stay fresh for up to 4 months.

If you prefer, you can portion it into smaller batches, that way you can reach for it when you want to make individual cocktails instead of a whole batch.

How do I tell if the watermelon juice went bad?

Believe me, you’ll know! Expired watermelon juice has a pretty awful aroma to it that you’ll smell once you open the container. Along with the foul smell is an equally as sour tasting flavor. If you notice an off smell or flavor to your juice, that means it likely went bad and you should discard it. Keep an eye out for mold or discolorations as well.