What Is Going To Happen In 2025 With The Sun. Larger, more intense storms are less common but can happen every few years. Scientists predict that the sun's new activity phase, called solar cycle 25, will peak in 2025 but will generally be a less active cycle, quite similar to solar cycle 24, which ended in.
As a result, the sun’s magnetic field gradually weakens, and solar activity begins to ramp up: For more details on this announcement and the specifics on this prediction, please see the solar cycle 25 press release.