Solar Flares in September, 2025
17 flares ↑ MAX: M6.5 ↓ MIN: B5.6
17 flares ↑ MAX: M6.5 ↓ MIN: B5.6
In September 2025, 17 solar flares were recorded; the strongest was M6.5 on September 28, 2025. The longest run of consecutive active days was 5 (26 Sep–30 Sep).
Most powerful Solar Flares in September 2025
| Date | Class | Level | Duration |
|---|---|---|---|
| September 28, 2025 | M6.5 | Moderate level | 7 min |
| September 29, 2025 | M3.7 | Moderate level | 7 min |
| September 30, 2025 | M2.7 | Moderate level | 6 min |
| September 30, 2025 | M1.8 | Moderate level | 31 min |
| September 26, 2025 | M1.7 | Moderate level | 6 min |
| September 24, 2025 | M1.6 | Moderate level | 11 min |
| September 19, 2025 | M1.5 | Moderate level | 16 min |
| September 5, 2025 | M1.4 | Moderate level | 2 min |
| September 30, 2025 | M1.3 | Moderate level | — |
| September 6, 2025 | M1.2 | Moderate level | — |
| September 23, 2025 | M1.1 | Moderate level | — |
| September 27, 2025 | M1.1 | Moderate level | 24 min |
| September 27, 2025 | M1.1 | Moderate level | — |
| September 29, 2025 | M1.1 | Moderate level | — |
| September 29, 2025 | M1.1 | Moderate level | 1 min |
| September 4, 2025 | M1 | Moderate level | — |
| September 24, 2025 | M1 | Moderate level | — |