Prediction time? OK - I will have a pop at it:
This dip seems pretty much right on time; mid January. It's been the lowest price point of the past four years, except for last year, which was coming down from the ATH, just like 2014 was.
Therefore, if history repeats itself the current few days (if not now, then no more than over the next three or four days) will be the lowest Bitcoin price of this year. We are if anything a day or two ahead of schedule.
Some things are indeed quite predictable, it's pretty weird. Like on schedule.
I even saw the Jan 8 high almost a month ago:
Just for fun, I'd like to make an additional prediction: Jan 8 for the date of the highest price.