Use a sharp knife and cutting board to cut fresh watermelon into cubes.
Add watermelon chunks, coconut yogurt, honey (if using), and ice cubes into the blender.
2 cups watermelon chunks
Secure the lid on the blender and blend on high speed until the mixture is completely smooth and frothy, about 30-45 seconds. Watch for a consistent pink color and no visible chunks.
Stop the blender and check the consistency; if it’s too thick, add a splash of water and blend for a few more seconds until well combined.
Pour the smoothie into chilled glasses, observing the vibrant pink color and light, frothy texture. Serve immediately with a straw or garnish if desired.