Yes, a rainbow-colored Sun halo accompanied by a circumhorizontal arc over Caracas, Venezuela—is real. This optical event has been documented in various online sources, including social media platforms.

Such atmospheric phenomena occur when sunlight refracts through ice crystals suspended in cirrus or cirrostratus clouds, creating colorful halos and arcs in the sky. The 22° halo and circumhorizontal arc are specific types of these optical displays.