Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4185 | N17 | W35 | 04 | 0010 | Beta | Aug 13, 2025 | Aug 20, 2025 | Sep 3, 2025 |
| № 4184 | S19 | W35 | 02 | 0010 | Beta | Aug 13, 2025 | Aug 20, 2025 | Sep 3, 2025 |
| № 4183 | S02 | W59 | 03 | 0010 | Beta | Aug 12, 2025 | Aug 18, 2025 | Sep 1, 2025 |
| № 4182 | N08 | E58 | 01 | 0020 | Alpha | Aug 20, 2025 | Aug 27, 2025 | Sep 10, 2025 |
| № 4181 | S13 | W41 | 01 | 0010 | Alpha | Aug 13, 2025 | Aug 20, 2025 | Sep 2, 2025 |
| № 4180 | S03 | E31 | 08 | 0050 | Beta | Aug 18, 2025 | Aug 25, 2025 | Sep 8, 2025 |
| № 4179 | S10 | E12 | 01 | 0010 | Alpha | Aug 17, 2025 | Aug 24, 2025 | Sep 6, 2025 |
| № 4178 | N09 | W90 | 02 | 0110 | Beta | Aug 9, 2025 | Aug 16, 2025 | Aug 30, 2025 |
| № 4177 | N05 | W19 | 01 | 0010 | Alpha | Aug 15, 2025 | Aug 21, 2025 | Sep 4, 2025 |
| № 4175 | N11 | W21 | 05 | 0030 | Beta | Aug 14, 2025 | Aug 21, 2025 | Sep 4, 2025 |
| № 4172 | N09 | W59 | 10 | 0110 | Beta-Gamma | Aug 12, 2025 | Aug 18, 2025 | Sep 1, 2025 |
| № 4171 | N19 | W39 | 01 | 0070 | Alpha | Aug 13, 2025 | Aug 20, 2025 | Sep 3, 2025 |
| № 4169 | N23 | W59 | 01 | 0030 | Alpha | Aug 11, 2025 | Aug 18, 2025 | Sep 1, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to August 2025. The gray background is the average SSN index.
