Sometimes they are a steady stream, sometimes they come in batches, sometimes there are a few days in a row with no inquiries at all, etc... Sometimes you see on a holiday weekend that its extra quiet and you think, yes, makes sense, everyone is busy. But then again, I also get inquiries on christmas morning of all days, so you think, ok, yeah, sometimes a holiday is the only time someone scrambling to run a business has any time to look think about a new project. If you zoom in too close, its just random.
If I look at my aggregate inquiry data, it seems January starts off strong, in fact pretty steady through the spring, then there's a summertime June/July/Aug slowdown ramping up again for Sept/Oct/Nov, then December slowdown.
Slowest months: August & December
Busiest months: January and May
December is 60% as busy as January.
As for sales (based on count, not price), similar trends, although May is weirdly low historically (although this year was great), but June is strong, probably as people want to wrap up purchases before summer hits. November has my highest # of sales, again, probably people wanting to wrap it up before the holiday slowdowns hit. May, July & December tie as my slowest months in terms of # of sales.