From what I saw when I was studying this varies every year--get a book of the most recent LSATs available to study from and see if there is one particular time of year that is easier for you. Also, I think that June is easier just because you are less likely to have other things going on when you are studying. Really though, there's no way to predict how "difficult" a given LSAT will be--the whole point of a standardized test is that IF it is an easier test you will have to do better on it to get the same score as you would on an "easier" test with fewer correct answers. There's no real way to predict EXACTLY what will be on a given administration--like no one predicted that last year's June test would have fewer games questions and more reading comp questions than normal--because of that (only really a couple of questions difference) it was an "easier" test than me because I was awesome at RC and terrible at games--led to me winding up getting a higher score on the real thing than on any practices. Just study your arse off and take it when you have the most free time to study and you should be fine.