Moonbow: The Rare Rainbow of the Night

A moonbow, also known as a lunar rainbow, is a rare natural phenomenon that occurs when moonlight is refracted, reflected, and dispersed through water droplets in the air, creating a rainbow at night.


Unlike a daytime rainbow, a moonbow is usually much fainter because moonlight is less intense than sunlight. To the human eye, most moonbows appear white or silvery, although cameras with long exposures can capture their full spectrum of colors.

Moonbows typically form when:
The moon is bright and nearly full.
The sky is dark and clear.
Water droplets are present, such as from mist, waterfalls, or light rain.
The moon is low in the sky, usually below 42 degrees above the horizon.

Some of the best places to observe moonbows include large waterfalls, where constant mist provides ideal conditions. Moonbows are considered one of the most beautiful and uncommon atmospheric phenomena on Earth.

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