The rare coin market definitely has its good and bad seasons. In general, the most active time of the year for coins is January and February, and the slowest time of the year is November and December.

If one were to look at each year on a month-by-month basis, market activity levels would usually be as follows;

In other words, January and February are usually the best months of the year. There are a lot of auctions, several big shows, and pent-up buyer demand from the previous slow months. Things back off a little in the March-April tax season. Market activity usually picks up in May and June with another round of important shows and auctions, along with some renewed, post-tax season buyer demand. Things slow down a little in the Summer, but there is a lot of activity around the time of the annual ANA convention. September and October are usually pretty active, with more shows and auctions. In November and December, the market almost always slows down, as coin buyers apparently think about other things during the Holiday season. Then January and February start the cycle again.