Get ready, Arizona! You're in for a celestial treat! The Grand Canyon State is poised to offer some of the most spectacular views of the Cold Moon Supermoon on December 4, 2025. A recent study by the Action Network has ranked Arizona as the second-best state in the U.S. for witnessing this stunning event.
This isn't just any full moon; it's the final supermoon of 2025, completing a rare trifecta of supermoons to round out the year.
According to the Supermoon Visibility Index, which considered factors like sky clarity, humidity, elevation, and darkness across all 50 states, Arizona is a prime location, just trailing behind New Mexico.
"Arizona's desert atmosphere gifts the Cold Moon with incredible clarity," explains an Action Network researcher. "With dry air, expansive horizons, and vast dark-sky regions, the moonrise here feels especially vivid—and the chances of seeing it clearly are among the very best in the country."
But here's where it gets interesting: The December full moon, traditionally known as the Cold Moon, marks the beginning of winter and the longest nights of the year. Indigenous cultures often associate this moon with frost, snow, stillness, and the early darkness of the season.
Why is this Cold Moon a Supermoon?
This particular Cold Moon aligns with the Moon being at its closest point to Earth, making it a supermoon. This means it will appear slightly larger and brighter, especially when it's low on the horizon at moonrise.
Adding to the drama, this supermoon follows November's unusually small new moon, creating a striking visual contrast. And this Cold Moon will be one of the highest-rising full Moons in northern skies until 2042, enhancing its visibility and brilliance.
Why Arizona Shines for Supermoon Viewing
Arizona's natural environment consistently provides some of the clearest winter skies in the nation, offering exceptional viewing opportunities due to:
- Dry desert air, which minimizes haze
- Frequent clear nights in early winter
- Low humidity, which sharpens details
- Extensive dark-sky zones, protected from light pollution
These conditions ensure the Moon appears crisp, bright, and beautifully defined as it ascends, giving Arizona skywatchers top-tier odds for a perfect viewing experience.
Best Spots in Arizona to Witness the Cold Moon
Consider these iconic Arizona locations for an unforgettable experience:
- Sedona & Oak Creek Canyon: Witness the red rock silhouettes under the rising Moon.
- Flagstaff Dark Sky Region: Benefit from high elevation and minimal light pollution.
- Saguaro National Park: Enjoy the iconic saguaro foregrounds.
- The Superstition Mountains: Take in the wide, dramatic desert horizons.
- Outskirts of Phoenix or Tucson: Find dark skies just beyond the city glow.
When and How to Watch
- Peak illumination: Approximately 5:14 p.m. MST on December 4
- Best viewing: Around moonrise, when the Moon appears largest and most colorful
- Tips: Choose an open horizon, avoid direct city lights, and stabilize your camera on a tripod or stable surface.
Top 5 States for Viewing the Cold Moon (2025)
- New Mexico
- Arizona
- Colorado
- Nevada
- Wyoming
What do you think? Will you be watching the Cold Moon Supermoon? Share your viewing plans and thoughts in the comments below! Do you think the study's ranking is accurate based on your experiences? Let's discuss!
