Double Rainbow Appears After the Rain! Is a Double Rainbow a Sign of Good Luck?

After heavy rain from morning to afternoon finally subsides and clear skies emerge, beautiful rainbows have appeared in various regions. Among them, many people have even witnessed a “double rainbow”! On social media, heartfelt messages along with vivid photos of double rainbows are being posted one after another, sparking widespread interest.

In fact, there is a long-held belief that “if you see a double rainbow, good fortune will come your way.” What exactly does this mystical phenomenon mean in the skies after the rain? Let’s delve into the captivating allure of the double rainbow, one of nature’s most enchanting gifts.

What is a Double Rainbow?

A double rainbow is a very rare phenomenon. The more vivid, inner arc is called the “primary rainbow,” while the fainter, outer arc is known as the “secondary rainbow.”

The primary rainbow appears when sunlight is refracted and reflected once inside water droplets in the atmosphere, displaying the colors in the order of red, orange, yellow, green, blue, indigo, and violet (from the outer edge inward). In contrast, the secondary rainbow appears after the light is reflected twice within the droplets, which reverses the order—so red appears on the inner side of the secondary rainbow, with the colors in the opposite order.

Does Seeing a Double Rainbow Bring Good Luck?

There is an old saying that spotting a double rainbow will bring:

・Your wishes to come true
・A sign of blessing
・A signal for a fresh start
・An indication that life is about to take a turn for the better

Some even claim that if you take a photo and set it as your phone’s wallpaper, good luck will follow!

Enchanting Double Rainbows Spotted Across the Land

Photos of stunning double rainbows have been shared across social media, and many people are awestruck by the mysterious and magical spectacle.

Comments such as “It’s like a blessing from the heavens!” and “I’ve never seen such vivid colors before!” are flooding in, capturing the joy of witnessing such a special moment.

From the double rainbow over Yokohama Minato Mirai to those seen at Akagiyama, this rare natural phenomenon is considered a symbol of good fortune. So next time you gaze up at the post-rain sky, keep your eyes open—you might just catch a double rainbow in all its glory!