In a nutshell, there are busier seasons than others, but people need to buy homes throughout the year and sellers need to sell homes throughout the year.
The first of March we see an upswing in activity which stays steady through fall. Homes still get bought and sold in the winter months and this can be beneficial to buyers as there might not be as much competition from multiple buyers submitting offers on the same property. Your specific situation is the determining factor as to when is a good time for you to buy.