Prepare veggies and watermelon by chopping, dicing, and mincing.
Combine all ingredients in a small mixing bowl. Gently stir until well combined. Cover and chill for 4-6 hours. Stir and slightly drain excess liquid before serving.
Store leftovers in an airtight container in fridge for up to 3 days.
Recipe by Breezy Bakes at https://www.breezybakesgf.com/watermelon-pico-de-gallo/