Greater Boston has a genuinely seasonal market: inventory and competition both peak in spring and thin out in winter. That means the seasons trade off against each other rather than one being simply better — spring offers buyers the most choice and the most competition, winter the least of both.
The more useful framing is that your own circumstances almost always outweigh the calendar. A household that needs to move in January should move in January. Timing the season is a marginal optimization, and treating it as a major one leads people to make large decisions badly in service of a small advantage.
