Solar Flares in December, 2025
29 flares ↑ MAX: X1.9 ↓ MIN: B5.1
29 flares ↑ MAX: X1.9 ↓ MIN: B5.1
In December 2025, 29 solar flares were recorded; the strongest was X1.9 on December 1, 2025. The longest run of consecutive active days was 3 (8 Dec–10 Dec).
Most powerful Solar Flares in December 2025
| Date | Class | Level | Duration |
|---|---|---|---|
| December 1, 2025 | X1.9 | High level | 2 h 16 min |
| December 8, 2025 | X1.1 | High level | 6 min |
| December 6, 2025 | M8.1 | Moderate level | 26 min |
| December 31, 2025 | M7.1 | Moderate level | 1 h 11 min |
| December 4, 2025 | M6.1 | Moderate level | 21 min |
| December 27, 2025 | M5.2 | Moderate level | 36 min |
| December 10, 2025 | M4.5 | Moderate level | 7 min |
| December 28, 2025 | M4.2 | Moderate level | 51 min |
| December 8, 2025 | M3.2 | Moderate level | 8 min |
| December 8, 2025 | M2.5 | Moderate level | 36 min |
| December 29, 2025 | M2.2 | Moderate level | 8 min |
| December 9, 2025 | M2 | Moderate level | 51 min |
| December 10, 2025 | M2 | Moderate level | 3 min |
| December 12, 2025 | M2 | Moderate level | 35 min |
| December 8, 2025 | M1.8 | Moderate level | 11 min |
| December 9, 2025 | M1.7 | Moderate level | 35 min |
| December 9, 2025 | M1.6 | Moderate level | 6 min |
| December 10, 2025 | M1.6 | Moderate level | — |
| December 9, 2025 | M1.5 | Moderate level | 1 min |
| December 10, 2025 | M1.3 | Moderate level | — |
| December 21, 2025 | M1.3 | Moderate level | 6 min |
| December 28, 2025 | M1.3 | Moderate level | 2 min |
| December 6, 2025 | M1.2 | Moderate level | 6 min |
| December 8, 2025 | M1.2 | Moderate level | 7 min |
| December 8, 2025 | M1.1 | Moderate level | 6 min |
| December 19, 2025 | M1.1 | Moderate level | 4 min |
| December 20, 2025 | M1.1 | Moderate level | — |
| December 10, 2025 | M1 | Moderate level | — |
| December 29, 2025 | M1 | Moderate level | — |
Solar Flares: Full Archive
| Year | Months |
|---|---|
| 2026 | Jan Feb Mar Apr May Jun Jul |
| 2025 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2024 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2023 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2022 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2021 | Apr May Jul Aug Sep Oct Nov Dec |
| 2020 | May Nov |
| 2017 | Apr Jul Aug Sep Oct |
| 2016 | Jan Feb Apr Jul Aug Nov |
| 2015 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2014 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2013 | Jan Feb Mar Apr May Jun Jul Aug Oct Nov Dec |
| 2012 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov |
| 2011 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2010 | Jan Feb May Aug Oct Nov |
| 2008 | Mar |
| 2007 | Jun |
| 2006 | Apr Jul Dec |
| 2005 | Jan Feb May Jun Jul Aug Sep Nov Dec |
| 2004 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2003 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2002 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2001 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |
| 2000 | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec |