| Solar cycle 25 | |
|---|---|
 ISES Solar Cycle 25 Sunspot Number Progression and Predictions up to September 2024 | |
| Sunspot data | |
| Start date | December 2019 |
| End date | about 2030 |
| Max count | 136.8 (smoothed) |
| Max count month | February 2024 (progressive)[1] |
| Min count | 1.8 |
| Cycle chronology | |
| Previous cycle | Solar cycle 24 (2008–2019) |
Solar cycle 25 is the current solar cycle, the 25th since 1755, when extensive recording of solar sunspot activity began. It began in December 2019 with a minimum smoothed sunspot number of 1.8.[2] It is expected to continue until about 2030.[3][4]
- ^ "Sunspot Number and Long-term Solar Observations: on-line Sunspot Number catalogue". SILSO, World Data Center. Royal Observatory of Belgium. Archived from the original on 5 April 2023.
- ^ National Weather Service. "Hello Solar Cycle 25". Archived from the original on 18 March 2021. Retrieved 15 September 2020.
- ^ Odenwald, Sten (2 September 2016). "Waiting for the next sunspot cycle: 2019-2030". The Huffington Post. Archived from the original on 12 December 2018. Retrieved 22 November 2017.
- ^ McIntosh, Scott W.; Wang, Xin; Leamon, Robert J.; Davey, Alisdair R.; Howe, Rachel; Krista, Larisza D.; Malanushenko, Anna V.; Markel, Robert S.; Cirtain, Jonathan W.; Gurman, Joseph B.; Pesnell, William D.; Thompson, Michael J. (8 August 2014). "Deciphering Solar magnetic activity: On the relationship between the sunspot cycle and the evolution of small magnetic features". The Astrophysical Journal. 792 (1): 12. arXiv:1403.3071. Bibcode:2014ApJ...792...12M. doi:10.1088/0004-637X/792/1/12. S2CID 118418019.