Farmers Almanac
The Farmers Almanac
Order your copy today!

What’s A Sun Halo?

What’s A Sun Halo?

Ever seen a ghostly rainbow halo around the Sun?

A Sun halo is caused by the refraction, reflection, and dispersion of light through ice particles suspended within thin, wispy, high altitude cirrus or cirrostratus clouds. As light passes through these hexagon-shaped ice crystals, it is bent at a 22° angle, creating a circular halo around the Sun. The prism effect of light passing through these six-sided ice crystals also separates the light into its various color frequencies, making the halo look like a very pale rainbow, with red on the inside and blue on the outside.

Folklore tells us Sun halos can predict the weather:

A ring around the Sun or Moon
means rain or snow is coming soon.


Occasionally, brighter areas will form along these halos, creating a mock Sun, or “sundog.” Sundogs are known as parhelia (or the singular parhelion) to astronomers, from the Greek words meaning “beside the Sun.”

Have you ever seen a sun halo, mock sun, or other interesting sights? Share in the comments below!

Shop for Related Products on Amazon

Disclosure: We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

Previous / Next Posts

  • Laura (Svenningsen) Rogaishio says:

    Saw one in Mass.Today.It rained then a rainbow around the sun.Beautiful!

  • Woneida-Nathan Naggy says:

    June 26,2020…There has been no rain. I have pictures of a 22 degree halo with sun dogs. This is above our yard.
    Around 3:00pm.🔥

  • Tricia says:

    Saw this in Cleveland Ohio on 6/25 – it was amazing!!

  • Huge sun halo in Florence Oregon today says:

    Huge sun halo in Florence Oregon today.

  • Bobbi J says:

    Have seen these since childhood.We called them sundogs. At night,when we saw them, we knew either rain or snow was on the way, depending on the season.💜💜

  • Melissa and Dan F. says:

    we just saw this today 6/7/2020. Very Pretty!

  • Melissa and Dan F. says:

    We just saw this happen today! 6/7/2020. Very pretty!

  • Linda Molina says:

    Actually I just saw one yesterday 6/5/20 and had no idea what is was. I wish I could add a photo.

  • Kristina says:

    I saw one this morning on Bellingham, Washington! It was so beautiful I sat down right on the sidewalk to experience it lol

  • Carol says:

    Saw one this morning in Brantford, Ontario Canada

  • Anita says:

    Yes, whilst I was in Florida, visiting my sister, at the beach, we were knee deep in water with her a 1yr. old, grand-daughter. We spotted a halo very weird and amazing.. Then out of the blue, we were wash by a riptide. We were able to rescue the baby and my sister to higher ground. It succeed to wash me under again. I am here to tell you, without the help of two strong young men and a female nurse telling them how to help me to safer grounds.

  • Kathy says:

    I’m in Newbury NH and saw a beautiful one around the sun today as well.

  • Denise says:

    I saw one today over Sturbridge Mass. It was beautiful. I’ve never seen or heard of it until today.

  • sue says:

    yes i saw one today first time ever its my birthday too so was extra specialb

  • Marilyn says:

    Saw one today Schaumburg,IL
    First time for me, Stunning beautiful, Lord of the heavens thank you !!!

  • Tom says:

    Saw a Sun Halo today at 2:51 pm in Festus, MO! What a sight!

  • Kay says:

    Looking at one now at 12:18 pm in Millersburg, OR.

  • Beverley says:

    A beautiful sun halo seen in Port Elizabeth, South Africa, today 07 May 2020 at 12.59 pm.

    • Randall says:

      at 2:40 pm in Machesney Park, Illinois 5/7/2020 prediction for snow or rain per Old Farmers Almanac

  • Jodi says:

    also today, May 3rd in So. FL around 1pm

  • If you notice a hole in the upper left-hand corner of your Farmers' Almanac, don't return it to the store! That hole isn't a defect; it's a part of history. Starting with the first edition of the Farmers' Almanac in 1818, readers used to nail holes into the corners to hang it up in their homes, barns, and outhouses (to provide both reading material and toilet paper). In 1919, the Almanac's publishers began pre-drilling holes in the corners to make it even easier for readers to keep all of that invaluable information (and paper) handy.

    Reading Farmers' Almanac on Tablet with Doggie

    Don't Miss A Thing!

    Subscribe to Our Newsletter and Get a FREE Download!