[Wolstie]

There are a couple things that point to the fact Faraday knew what was about to happen.

The first is that he makes a point of telling Charlotte and Miles to make sure that they are on the next boat trip out.

The second is that when Juliet mentions she will take the boat when he comes back, Faraday gives a sarcastic laugh/response implying that he knows he will not be returning for another trip.

This suggests that Faraday is either from a future time period or has visted the future the same way Desmond visted the past.