Yes, there is a supermoon tonight, December 5, 2025. It is the last supermoon of the year, also known as the "Cold Supermoon," and it will appear especially large and bright in the sky due to its proximity to Earth. The best time to see it is just after sunset, and it will remain visible throughout the night. This event is notable because the moon will reach its highest elevation since 2006, making it a particularly striking sight.