ByRebekah Winscott Healthy, Salads, Vegetarian

Fresh Avocado Cucumber Salad

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If you need a fresh, easy side dish that comes together in minutes, this avocado cucumber salad is one of the best recipes to keep on repeat. With creamy avocado, crisp cucumber, and a bright lime dressing, it’s the kind of simple salad that tastes like summer in every bite.

A close-up overhead view of creamy avocado cucumber salad in a white bowl, featuring thick slices of peeled cucumber, chunks of avocado, diced red onion, and fresh dill coated in a creamy sour cream dressing. The bowl sits on a wooden board over a gray wooden table, showing the fresh texture and creamy consistency of the chilled salad.

This cucumber avocado salad is light, refreshing, and packed with healthy fats, making it a great option when you want something satisfying without feeling heavy. It’s naturally gluten-free, easy to customize, and takes just 10 minutes to make with a handful of simple ingredients.

I love serving this avocado salad recipe with grilled chicken, burgers, salmon, or tacos, but it’s just as good on its own for a quick lunch or meal prep. Whether you’re planning a backyard BBQ, taco night, or just need a healthy salad recipe for hot days, this easy summer salad always delivers.

Why You’ll Love This Avocado Cucumber Salad

  • You only need a handful of fresh basics like avocado, cucumber, red onion, lime, and herbs to pull this salad together.
  • This is the perfect last-minute side dish when you need something quick and easy without sacrificing flavor.
  • When it’s too hot to turn on the stove, this no-cook salad is exactly what you want. Just chop, toss, and serve.
  • It’s a simple option for serving a crowd, especially when you need something that works for different dietary needs.

Ingredients You’ll Need

(Keep scrolling to the recipe card below for the full printable recipe!)

Overhead photo of the ingredients for avocado cucumber salad arranged in small bowls on a white background, including sliced cucumber, diced red onion, cubed avocado, sour cream, dill, salt, and black pepper before mixing.
  • Cucumber: Cucumber adds the perfect crisp, refreshing bite and keeps the salad light and hydrating.
  • Avocado: Avocado brings a creamy, buttery texture that balances the crunch of the cucumber. Use a ripe avocado that’s slightly firm so it holds its shape when mixed.
  • Red onion: Red onion adds a little sharpness and crunch that helps brighten the whole salad.
  • Sour cream: Sour cream creates a creamy dressing that coats everything beautifully and gives this salad a rich, tangy flavor.
  • Fresh dill: Dill adds a fresh, herby flavor that pairs perfectly with cucumber and sour cream.
  • Salt: Salt helps bring all the flavors together and enhances the freshness of the vegetables.
  • Black pepper: A little black pepper adds subtle warmth and balances out the creamy dressing.

How to Make Avocado Cucumber Salad

Close-up overhead photo of peeled cucumber slices in a white bowl with a spoon, prepared as the first step for making avocado cucumber salad.
Overhead photo of sliced cucumbers, cubed avocado, and diced red onion combined in a white bowl as the first mixing step for avocado cucumber salad.
Overhead photo of sliced cucumbers, cubed avocado, diced red onion, sour cream, dill, salt, and black pepper in a white bowl before mixing.

1. Start by peeling the cucumber and slicing it into rounds. Cut the avocado into small chunks, then add both to a medium mixing bowl.
2. Next, dice the red onion and add it to the bowl with the cucumber and avocado.
3. In a separate small bowl, stir together the sour cream, dill, salt, and pepper until smooth and creamy.
4. Pour the sour cream mixture over the cucumber mixture and gently stir until everything is evenly coated. Be careful not to overmix so the avocado stays chunky and doesn’t get mushy.

An overhead view of side dish served in a white bowl, made with sliced peeled cucumbers, diced red onion, avocado chunks, and fresh dill mixed in a creamy sour cream dressing. The bowl is placed on a white striped kitchen towel over a gray wooden table, showing the full plated salad ready to serve cold.

How to Keep Avocado from Turning Brown

Since avocado browns quickly once it’s cut, this salad is best served fresh. If you’re making it ahead of time, there are a few easy ways to help keep the avocado looking fresh.

A little lemon or lime juice can help slow browning by reducing oxidation, so you can toss the avocado in citrus juice before adding it to the salad. Another simple option is to wait and add the avocado just before serving, which keeps it firm, creamy, and bright green.

If you have leftovers, store the salad in an airtight container in the refrigerator and press plastic wrap directly over the top to limit air exposure. Even if the avocado starts to brown slightly, it’s still perfectly fine to eat — but the salad will always taste best the day it’s made.

How to Store Avocado Cucumber Salad

  • Serve it fresh for the best texture. Since avocado softens quickly and cucumber can release water, this salad tastes best right after it’s made.
  • Store leftovers in the refrigerator for up to 1 day. Keep the salad in an airtight container to help maintain freshness and prevent it from drying out.
  • Expect some browning from the avocado. The avocado may start to brown after sitting, which is completely normal. It will still be safe to eat, but the texture may be softer.
  • Add the avocado later if making ahead. If you want to prep this salad in advance, mix the cucumber, red onion, and dressing first, then stir in the avocado just before serving for the freshest results.
  • Cover tightly to reduce air exposure. Pressing plastic wrap directly on top of the salad before sealing the container can help slow oxidation and keep the avocado greener longer.
A side-angle view of creamy avocado cucumber salad in a white bowl, featuring thick slices of peeled cucumber, diced red onion, avocado chunks, and fresh dill coated in a creamy sour cream dressing. The bowl is set on a white striped cloth over a gray wooden table, showing the smooth texture and fresh ingredients of the chilled salad.
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A close-up side view of creamy avocado cucumber salad in a white bowl, made with thick cucumber slices, cubed avocado, diced red onion, and fresh dill mixed in a creamy sour cream dressing, served chilled on a light cloth over a wooden table.

Avocado Cucumber Salad

Recipe by Rebekah Winscott

This creamy avocado cucumber salad is fresh, cool, and easy to make with crisp cucumber, creamy avocado, red onion, sour cream, and dill. A quick no-cook side dish that’s perfect for summer lunches, BBQs, or weeknight dinners.

  • Total Time20 minutes
  • Yield4 1x
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Ingredients

Units Scale
  • 1 cucumber, peeled and sliced into rounds
  • 1/2 avocado, cubed
  • 1/2 red onion, diced
  • 1/4 cup sour cream
  • 1 tablespoon dill
  • 1/3 teaspoon salt
  • 1/3 teaspoon black pepper

Instructions

  1. Peel the cucumber and slice it into rounds. Cut the avocado into small pieces, then add both to a medium mixing bowl.
  2. Dice the red onion and add it to the bowl with the cucumber and avocado.
  3. In a separate small bowl, mix together the sour cream, dill, salt, and pepper until smooth and well combined.
  4. Add the sour cream mixture to the cucumber mixture and gently stir until everything is evenly coated.
  5. Serve cold for the best flavor and texture.

Notes

  • This salad is best served fresh, since avocado can brown and cucumber may release moisture as it sits.
  • For the best texture, use an avocado that is ripe but still slightly firm.
  • If making ahead, prepare the cucumber, onion, and dressing first, then add the avocado right before serving.

Nutrition

  • Serving Size: ½ cup
  • Calories: 75 kcal
  • Sugar: 1.5g
  • Fat: 7g
  • Carbohydrates: 4g
  • Fiber: 2g
  • Protein: 1g
  • Cholesterol: 6mg

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Posted In: Healthy, Salads, Vegetarian

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Rebekah Winscott

Food Blogger

Rebekah Winscott is a Lancaster, Pennsylvania–based food blogger and the creator of This Nana Can Cook, where she shares approachable, flavorful recipes for everyday cooks. Inspired by her grandmother’s timeless dishes, she blends quick, delicious meals with heartwarming storytelling and practical kitchen tips.

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