| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/09/15 | 3 | 20 | CRO | N04E57 | |
| 2025/09/16 | 3 | 50 | CSO | S05E43 | |
| 2025/09/17 | 6 | 110 | DSO | N04E29 | |
| 2025/09/18 | 3 | 70 | CAO | N04E15 | |
| 2025/09/19 | 8 | 70 | DSO | N04E03 | |
| 2025/09/20 | 3 | 60 | CSO | N03W13 | |
| 2025/09/21 | 4 | 90 | CSO | N04W25 | |
| 2025/09/22 | 1 | 100 | HSX | N04W39 | |
| 2025/09/23 | 1 | 70 | HSX | N04W53 | |
| 2025/09/24 | 1 | 60 | HSX | N04W67 | |
| 2025/09/25 | 1 | 100 | HSX | N04W83 | |
| 2025/09/26 | 1 | 100 | HSX | N04W98 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C7.9 | 2025/09/26 | 18:53 | 19:05 | 19:14 |
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| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 119.1 -4.9 |
| Last 30 days | 122.3 +12.7 |