to be totally honest with you i do NOT see any relationship between months (seasons) and bitcoin price whatsoever.
i know that there are a lot of  theories about this connection and how some claim certain trends exist but in the end i consider them more of a coincidence than anything else.

and as a proof i think this year is a good proof. every year we had a drop in Jan. and Feb. and then price picked up in Mar. and April but this year nothing is happening!