In a large mixing bowl, combine sliced cucumbers, halved cherry tomatoes, sweet corn, sliced red onion, chopped cilantro, and sliced jalapeño.
In a small bowl, whisk together olive oil, lime juice, honey (or agave syrup), ground cumin, salt, and pepper.
Pour the dressing over the cucumber mixture and toss until all ingredients are well coated.
Let the salad marinate in the refrigerator for at least 15-20 minutes to allow the flavors to meld.
Before serving, garnish with additional cilantro and avocado slices if desired.
Serve chilled and enjoy your zesty and refreshing Mexican Cucumber Salad!