This refreshing watermelon and cucumber smoothie is made with cucumber, watermelon, lime juice, buttermilk, and a touch of honey. The recipe creates a cool, hydrating, and slightly tangy drink that’s perfect for hot summer days. Light and naturally sweet, this smoothie makes 2 servings and comes together in just 5 minutes.
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🍉 Watermelon and Cucumber Smoothie Ingredients
- 1 piece English cucumber (2-inch), peeled and roughly chopped (about 1/2 cup), plus 1 slice reserved for garnish
- 3 tablespoons low-fat buttermilk
- 1 tablespoon honey (optional)
- 1/2 small lime, juiced (about 1 tablespoon)
- 2 cups cubed seedless watermelon, frozen

🍷 How To Make Watermelon and Cucumber Smoothie
- Prepare the ingredients: Chop cucumber and freeze watermelon cubes in advance for the best texture.
- Blend the smoothie: In a blender, combine cucumber, buttermilk, honey (if using), lime juice, and frozen watermelon.
- Blend until smooth: Process on high speed until creamy and frosty.
- Serve cold: Pour into glasses and garnish with a cucumber slice.
💭 Recipe Tips
- Freeze watermelon ahead: Freezing watermelon cubes gives the smoothie a slushy, frosty texture without needing ice.
- Adjust sweetness: Watermelon is naturally sweet, so honey is optional. Add only if your melon isn’t very sweet.
- Use Greek yogurt instead of buttermilk: For a creamier texture and more protein, swap buttermilk with yogurt.
- Add herbs: Fresh mint or basil pairs beautifully with cucumber and watermelon.
- Boost nutrition: Stir in chia seeds or flaxseeds for extra fiber.
🥪 What To Serve Watermelon and Cucumber Smoothie With?
This smoothie is the perfect companion to a light summer breakfast like avocado toast, fruit salad, or granola. It’s also great as a refreshing afternoon drink by the pool or a healthy pre-workout boost.
🎚 How To Store Watermelon and Cucumber Smoothie Leftovers?
- Refrigerate: Store in an airtight jar for up to 24 hours. Shake or stir before drinking, as separation may occur.
- Freeze: Pour leftovers into popsicle molds and freeze for a hydrating frozen treat.
FAQs
Can I make this without buttermilk?
Yes! Replace with Greek yogurt, coconut water, or almond milk for a dairy-free option.
Can I use regular cucumber instead of English cucumber?
Yes, but peel and deseed it for the smoothest texture.
Is watermelon good in smoothies?
Absolutely! It adds natural sweetness, hydration, and a light, refreshing flavor.
Can I make this ahead of time?
It’s best enjoyed fresh, but you can store it for up to 24 hours in the fridge or freeze as popsicles.
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📊 Watermelon and Cucumber Smoothie Nutrition Facts
Serving Size: 1 glass (about 1 1/2 cups)
- Calories: 75 kcal
- Total Fat: 0.5g
- Saturated Fat: 0g
- Cholesterol: 2mg
- Sodium: 20mg
- Total Carbohydrates: 19g
- Dietary Fiber: 1g
- Sugars: 15g
- Protein: 2g
Watermelon-and-Cucumber Smoothie
Course: Drinks, BreakfastCuisine: American2
servings5
minutes75
kcalWatermelon and Cucumber Smoothie is a light, refreshing blend of frozen watermelon, cucumber, lime juice, buttermilk, and honey. Hydrating, naturally sweet, and ready in 5 minutes.
Ingredients
1/2 cup cucumber, chopped
3 tbsp low-fat buttermilk
1 tbsp honey (optional)
1 tbsp lime juice
2 cups frozen watermelon cubes
Directions
- Add cucumber, buttermilk, honey, lime juice, and watermelon to a blender.
- Blend until smooth and frosty.
- Pour into glasses and garnish with cucumber slice.
- Serve immediately.
Notes
- Freeze watermelon ahead: Freezing watermelon cubes gives the smoothie a slushy, frosty texture without needing ice.
Adjust sweetness: Watermelon is naturally sweet, so honey is optional. Add only if your melon isn’t very sweet.
Use Greek yogurt instead of buttermilk: For a creamier texture and more protein, swap buttermilk with yogurt.
Add herbs: Fresh mint or basil pairs beautifully with cucumber and watermelon.
Boost nutrition: Stir in chia seeds or flaxseeds for extra fiber.