I was just thinking the same! It felt like everybody and their dog did Bloganuary last month, meanwhile I went in the opposite direction!
Historically, there’s been an annual dip in my blogging around February/March (followed by a summer surge!), but in recent years it feels like that hiatus has shifted to January (I haven’t run the numbers yet to be sure, though).
I don’t think that’s necessarily a problem, for me at least. I write for myself first, others afterwards, and so it follows that if I blog when it feels right then an ebb-and-flow to my frequency ought to be a natural consequence. But it still interests me that I have this regular dip, and I wonder if it affects the quality of my writing in any way. I feel the pressure, for example, for post-hiatus blogging to have more impact the longer it’s been since I last posted! Like: “it’s been so long, the next thing I publish has to be awesome, right?”, as if my half-dozen regular readers are under the assumption that I’m always cooking-up something and the longer it’s been, the better it’s going to be.