| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/09/16 | 4 | 10 | BXO | S09E44 | |
| 2025/09/17 | 1 | 10 | AXX | S10W57 | |
| 2025/09/19 | 6 | 20 | CAO | S09E02 | |
| 2025/09/20 | 4 | 30 | CAO | S10W13 | |
| 2025/09/21 | 7 | 50 | DAI | S10W25 | |
| 2025/09/22 | 5 | 40 | DAO | S13W22 | |
| 2025/09/23 | 3 | 30 | CRO | S13W36 | |
| 2025/09/24 | 5 | 50 | CAO | S13W50 | |
| 2025/09/25 | 4 | 10 | CSO | S13W68 | |
| 2025/09/26 | 2 | 60 | DSO | S14W80 | |
| 2025/09/27 | 2 | 60 | DSO | S14W94 | |
| 2025/09/28 | 2 | 60 | DSO | S14W0* |
| C | M |
|---|---|
| 7 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.6 | 2025/09/24 | 18:57 | 19:13 | 19:22 | |
| 2 | M1.0 | 2025/09/24 | 09:16 | 09:31 | 09:44 | |
| 3 | C3.6 | 2025/09/25 | 04:00 | 04:09 | 04:16 | |
| 4 | C3.3 | 2025/09/21 | 17:33 | 17:43 | 17:50 | |
| 5 | C3.3 | 2025/09/25 | 06:10 | 06:23 | 06:41 | |
| 6 | C3.2 | 2025/09/25 | 02:14 | 02:23 | 02:30 | |
| 7 | C2.9 | 2025/09/24 | 01:15 | 01:41 | 02:00 | |
| 8 | C2.3 | 2025/09/24 | 01:00 | 01:08 | 01:15 | |
| 9 | C2.0 | 2025/09/23 | 22:34 | 22:43 | 22:54 |
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| Last X-flare | 2026/02/02 | X1.6 |
| Last M-flare | 2026/02/02 | M2.5 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 114 -10 |
| Last 30 days | 118.1 +6.2 |