Wash cucumbers and tomatoes. Cut cucumbers into bite-sized pieces and slice tomatoes similarly, halving cherry or grape tomatoes. Place in a large mixing bowl.

In a small bowl, whisk together olive oil, red wine vinegar, salt, and black pepper until emulsified.

Pour the dressing over the vegetables and toss gently to combine.

Let the salad rest at room temperature for at least 20 minutes to absorb flavors.

Taste and adjust seasoning, then serve in a vibrant bowl.