Refresh post-workout or on a hot day in just minutes with this simple hydrating watermelon cucumber smoothie. The addition of lime juice and fresh mint will transport you to a tropical destination. Disclaimer: This post is sponsored by the National Watermelon Promotion Board. All opinions are our own.

Refreshing Watermelon Cucumber Smoothie

Smoothies are an easy way to get in nutrients in just minutes! There are so many different combinations you can use to create the perfect smoothie, and we really love this Watermelon Cucumber Smoothie. Especially post-workout or on a hot summer day. Did you know watermelon is 92% water? That makes it perfect for hydration! Pair that with another water-rich fruit (yep, like tomatoes, cucumbers are also technically a fruit!) and you have a match made in hydration heaven.

For more delicious flavor combinations featuring watermelon, check out this post.

Hydrating Watermelon Cucumber Smoothie

Here’s what you’ll need to make the perfect watermelon cucumber smoothie:

  • Frozen Watermelon: See below for tips on how to freeze your watermelon. No frozen watermelon on hand? Add 1/2 to 1 cup of ice to your blender.
  • Cucumber: Opt for a seedless cucumber for a smoother texture. Look for the long, skinny cucumbers wrapped in plastic.
  • Coconut water: You could use your favorite milk, juice or regular water in place of coconut water, but then you’d miss out on all that potassium, which helps your muscles work.
  • Fresh lime juice: Add more or less to your liking.
  • Mint: If you don’t have fresh mint on hand, you can skip but it does enhance the flavor of this smoothie.
Easy Watermelon Cucumber Smoothie

Add all your ingredients to the blender and blend until smooth! If you prefer a creamier smoothie, you can add in a banana (yay for more potassium!) or an avocado.

If you’re looking for other yummy smoothie combinations, here are a few of our favorites:

Best Watermelon Cucumber Smoothie

How to Freeze Watermelon:

  1. Chop watermelon into desired size. I like smaller 1 or 2-inch cubes for easy blending.
  2. Lay watermelon single layer on a baking sheet and place in freezer for 1-2 hours. Freezing individually will prevent the watermelon from clumping together.
  3. Once frozen, transfer to Ziplock freezer bag for storage.
Watermelon Cucumber Smoothie
Refreshing Watermelon Cucumber Smoothie pin

Refreshing Watermelon Cucumber Smoothie FAQs

Q: What are the main ingredients in a Watermelon Cucumber Smoothie?
A: The main ingredients are frozen watermelon, cucumber, coconut water, lime juice, and fresh mint leaves.

Q: Why is watermelon a good ingredient for a hydrating smoothie?
A: Watermelon is 92% water, making it an excellent source of hydration for smoothies.

Q: Can I use fresh watermelon instead of frozen for this smoothie?
A: Yes, if you don’t have frozen watermelon on hand, you can use fresh watermelon and add 1/2 to 1 cup of ice when blending.

Q: How do you freeze watermelon for smoothies?
A: To freeze watermelon, chop it into cubes, lay on a baking sheet and freeze for 1-2 hours until solid. Then transfer to a freezer bag for storage.

Q: What can I add to make this watermelon smoothie creamier?
A: You can add a banana or an avocado to the smoothie to make it creamier.

Q: How many calories are in one serving of this Watermelon Cucumber Smoothie?
A: One serving of the smoothie contains 44 calories.

Q: What other smoothie recipes pair well with watermelon?
A: Some other recommended watermelon smoothie combinations are watermelon strawberry, watermelon yogurt, watermelon kiwi, and peach pie smoothies.

Benefits of Drinking this Watermelon Cucumber Smoothie

Watermelon Benefits:

  • Watermelon is 92% water, making it an excellent source of hydration.
  • It’s refreshing, especially post-workout or on a hot day.
  • Rich in vitamins A, B6, C
  • Good source of antioxidants like lycopene
  • May help lower blood pressure and inflammation

Cucumber Benefits:

  • Like watermelon, cucumbers are also water-rich fruits that aid in hydration.
  • Using a seedless cucumber provides a smoother texture to the smoothie.
  • Contain antioxidants
  • Promote hydration
  • High in vitamin K
  • May aid in weight loss due to high water and fiber content

So in summary, the watermelon provides hydration, nutrients and refreshment, while the cucumber also contributes to hydration plus a smooth texture for the smoothie. Together they make a hydrating, nutritious beverage.

#HowDoYouWintermelon? Show off your winter watermelon ideas on Instagram, Facebook or TikTok. Visit for full details.

Watermelon Cucumber Smoothie

Amanda Keefer
Refresh post-workout or on a hot day with this simple hydrating watermelon cucumber smoothie. The addition of coconut water, lime juice and fresh
mint will transport you to a tropical destination.

Prep Time 10 minutes
Total Time 10 minutes
Course Drinks
Servings 2 servings
Calories 44 kcal


  • 1 cups frozen watermelon
  • ½ cup chopped seedless cucumber
  • ½ cup coconut water
  • ½ lime juiced
  • 2-3 fresh mint leaves


  • Add watermelon, cucumbers, coconut water, lime juice and mint to blender. Blend until smooth.


  • If you prefer a creamy smoothie, add a banana before blending.
  • No frozen watermelon? Use fresh and add 1/2 – 1 cup of ice.


Calories: 44kcalCarbohydrates: 11gProtein: 1gFat: 1gSaturated Fat: 1gPolyunsaturated Fat: 1gMonounsaturated Fat: 1gSodium: 65mgPotassium: 296mgFiber: 2gSugar: 7gVitamin A: 511IUVitamin C: 14mgCalcium: 32mgIron: 1mg
Keyword cucumber, healthy drinks, hydration, smoothie, watermelon
Tried this recipe?Let us know how it was!