Looking for a crisp, refreshing side dish for warm weather meals? This easy Cucumber Salad is light, tangy, crunchy, and ready with just a few simple ingredients. It is also low carb, keto-friendly, and perfect for picnics, BBQs, cookouts, or a quick everyday snack.

Why You’ll Love This Cucumber Salad
- It is fresh and versatile: Serve this cucumber onion salad as a chilled side dish, a light snack, or a simple addition to grilled meats. For a more filling option, you can add cooked cubed chicken.
- It is low carb and keto-friendly: Each serving has only 4g net carbs, making it a great choice for a low carb summer salad.
- It is quick to prepare: With fresh cucumbers, red onion, dill, and a tangy vinegar dressing, this easy cucumber salad comes together in minutes.
- It is ideal for warm weather: The cool, crisp texture makes it especially refreshing for summer holidays, potlucks, and casual family meals.
Ingredients Needed to Make This Low Carb Cucumber Salad Recipe
Exact ingredient amounts are listed in the recipe card below.
- English cucumbers
- Red onion
- Fresh dill
- Red wine vinegar
- Salt
- Pepper
- Swerve Confectioners or another sugar substitute, optional
How to Make Cucumber Salad {Quick Overview}
This is a quick overview of how to make this low carb cucumber salad. For exact measurements and detailed directions, see the recipe card at the end of the post.
Start by preparing the vegetables and herbs. Thinly slice the English cucumbers. There is no need to peel them because English cucumber skins are thin, tender, and mild in flavor.
Next, thinly slice the red onion. If you prefer a milder onion bite or smaller pieces, you can dice the onion instead. Chop the fresh dill, then add the cucumbers, onion, and dill to a large mixing bowl.

In a separate small bowl, make the dressing by whisking together the red wine vinegar, salt, pepper, and optional sugar substitute. The vinegar gives this salad its bright, zesty flavor, while the optional sweetener softens the acidity without adding sugar.

Pour the dressing over the sliced cucumbers, red onion, and dill.

Toss gently until all of the vegetables are evenly coated in the dressing.

For the best flavor, loosely cover the bowl and refrigerate the salad for at least 30 minutes before serving. This short chilling time helps the cucumbers stay crisp while allowing the dressing, onion, and dill to blend together.
Serve this easy cucumber onion salad cold and enjoy it as a refreshing side with grilled foods, picnic dishes, or simple low carb meals.
More Summer Side Dish Recipes
If you need more low carb side dishes for a picnic, BBQ, or cookout, try one of these fresh and flavorful ideas:
- Low Carb Broccoli Salad is crunchy, creamy, and great with grilled meals.
- Keto Coleslaw is a creamy, tangy classic for summer plates.
- Cucumber and Tomato Salad is another bright cucumber-based side dish.
- Healthy Greek Salad is zesty, colorful, and easy to serve.
- Cauliflower Mac and Cheese is a rich, cheesy low carb comfort food side.
- Easy Antipasto Salad brings bold Italian-inspired flavor to the table.
- Bacon and Green Beans is savory, simple, and satisfying.
How to Store Cucumber Salad in the Refrigerator
Store cucumber salad in an airtight container in the refrigerator. For the best texture, keep it well covered and avoid packing the cucumbers too tightly. Properly stored, this salad can last for 2 to 3 days in the fridge. The cucumbers may release some liquid as they sit, so give the salad a gentle toss before serving leftovers.
How to Store Cucumber Salad in the Freezer
Freezing cucumber salad is not recommended. Cucumbers have a high water content, and they usually become soft and mushy after thawing. This salad is best enjoyed fresh or chilled from the refrigerator.
Nutrition Facts for This Easy Keto Cucumber Salad Recipe
Per serving, based on 6 total servings:
- 21 calories
- 0.1g fat
- 1g protein
- 4g net carbs

Healthy and Low Carb Summer Salads
This cucumber salad is best as a side dish or snack. If you want a heartier low carb salad that can work as lunch or dinner, try one of these options:
- Low Carb Chicken Salad is creamy, flavorful, and filling.
- Low Carb Egg Salad is tangy, satisfying, and simple to prepare.
- Big Mac Salad combines crisp vegetables, seasoned beef, and creamy sauce.
- Cobb Salad is hearty enough for lunch or dinner.
- Chicken Strawberry Salad pairs tender chicken with juicy berries and dressing.
- Low Carb Taco Salad is a fresh taco-inspired bowl.
- Turkey Taco Salad is lean, flavorful, and easy to make.
Like This Post? Give it a Share!
I hope you enjoy this easy low carb cucumber salad recipe. It is simple, crisp, refreshing, and a great make-ahead side dish for warm weather meals.

Cucumber Salad
Ingredients
- 2 English cucumbers thinly sliced
- 1/2 large red onion thinly sliced
- 2 tbsp fresh dill chopped
- 1/4 cup red wine vinegar
- 1 tsp salt
- 1/2 tsp pepper
- 2 tsp Swerve Confectioners or another sugar substitute optional
Instructions
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Add the sliced cucumbers, sliced red onion, and chopped fresh dill to a large bowl.
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In a small bowl, whisk together the red wine vinegar, salt, pepper, and optional sugar substitute.
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Pour the dressing over the vegetables and toss gently until everything is evenly coated.
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Refrigerate for at least 30 minutes before serving for the best chilled flavor.
Nutrition Disclaimer
Nutrition facts are provided as a courtesy only. Values are based on the ingredients listed and may vary depending on the exact products used. If applicable, sugar alcohols have already been removed from the net carb count.