Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 31, 2025. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 4207 | N30 | E71 | 02 | 0120 | Alpha | Sep 6, 2025 | Sep 14, 2025 | Sep 28, 2025 |
| № 4206 | N09 | E60 | 01 | 0080 | Alpha | Sep 5, 2025 | Sep 12, 2025 | Sep 26, 2025 |
| № 4205 | N18 | E56 | 01 | 0060 | Alpha | Sep 5, 2025 | Sep 12, 2025 | Sep 26, 2025 |
| № 4202 | S15 | E10 | 02 | 0110 | Alpha | Sep 2, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4201 | S21 | E05 | 04 | 0090 | Beta | Sep 1, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4200 | S08 | W53 | 06 | 0050 | Beta | Aug 28, 2025 | Sep 4, 2025 | Sep 17, 2025 |
| № 4199 | N04 | E07 | 08 | 0140 | Beta | Sep 1, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4197 | S18 | W08 | 50 | 0700 | Beta-Gamma-Delta | Aug 31, 2025 | Sep 7, 2025 | Sep 21, 2025 |
| № 4196 | S11 | W12 | 01 | 0010 | Alpha | Aug 31, 2025 | Sep 7, 2025 | Sep 20, 2025 |
| № 4191 | N11 | W52 | 08 | 0325 | Beta | Aug 28, 2025 | Sep 4, 2025 | Sep 17, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to August 2025. The gray background is the average SSN index.
