Steam fresh corn kernels in a steamer basket over boiling water for about 5 minutes until tender but still crunchy.

Remove corn from heat and let it cool for a few minutes on a plate.

Prepare vegetables by dicing avocados, halving cherry tomatoes, and chopping cucumbers and red onion into bite-sized pieces.

In a large mixing bowl, combine cooled corn with diced avocado, halved cherry tomatoes, cucumbers, and red onion.

Drizzle with olive oil and lemon juice. Season with salt and pepper, then gently toss to combine.

Serve immediately for the freshest taste.