Discover the Last Supermoon of 2025: Essential Facts About December’s Cold Moon
December 2025 will witness a remarkable astronomical event: the last supermoon of the year, known as the Cold Moon. This full moon will reach its peak illumination on December 4 at 3:14 p.m. PST.
What is a Supermoon?
A supermoon occurs when the moon is full while at its closest approach to Earth, known as perigee. On December 4, the moon will be approximately 221,808 miles from our planet. This proximity makes the moon appear larger and brighter than usual.
Characteristics of the December Cold Moon
The December full moon is historically referred to as the Cold Moon, a name derived from the Mohawk tribe. It is associated with the colder weather experienced in many regions during this month.
Timing and Visibility
The Cold Moon will be particularly notable due to its higher position in the sky and increased brightness. It will appear prominently throughout the winter. As it rises in the east and sets in the west, it will reach its apex due south around midnight.
Impact on Tides
Supermoons have a significant effect on tidal patterns. They can cause exceptionally high tides known as king tides. The Cold Moon will lead to these tides occurring between December 4 and 6, following similar events seen with the November supermoon.
Weather Forecast for December 4
In Oregon, cloud cover is expected on the evening of December 4, with a 73-95% chance of overcast skies. Observers may encounter challenges in viewing the Cold Moon due to these conditions.
Summary of Key Facts
- Event: Last supermoon of 2025 (Cold Moon)
- Date: December 4, 2025
- Peak Illumination: 3:14 p.m. PST
- Distance to Earth: 221,808 miles
- Tide Effects: King tides expected December 4-6
- Weather in Oregon: Mostly cloudy with high chances of cloud cover
Mark your calendars for this spectacular event as the Cold Moon shines brightly, even amidst the wintry skies of December.
