[EricH]

This was brought up some years back. There are a number of good reasons not to have official FIRST events in the summer. (For those of us in the Northern Hemisphere, that is.)

1) School access--or lack thereof. Gotta have permission and keys and all that to get in, which can be harder to get during summer.
2) Scattered team members. Assuming that the build season isn't in summer as well, you've got to come up with enough team members due to summer activities, including vacations.
3) Crowded venues. Not that this would necessarily be an issue, but a lot of conferences and athletic events tend to take place in summer. This makes venues harder to come by, or more expensive if you can get them, due to supply and demand.

But, if you really want a summer FRC season, there's an easy solution. I think the Brazilians, Chileans, or Aussies would probably love having an experienced FIRSTer on their teams... They already build and compete in summer.