Hey Tusman,
Im planning our trip to go up there in 2015.
I have been researching the drive up there and have come accross a few websits that can help you out.
http://www.exploroz.com/TrekNotes/FNQ/Cape_York.aspx
Here is one that will give you local info - mainly tourist stuff but its a start.
http://www.cairns.com.au/visitor-inf...own-guide.html
Basically between May and October are the ideal times to travel up there. However they are predicting a pretty big wet season up there this year and it might carry on into winter.
Cheers,
Rob