I find summer generally a boring time, especially when during the daytime on weekdays there is sod all to do.
Thankfully I've been getting more overtime at work, albeit mostly in the evenings, but that still goes a long way in helping me do something, plus i'm financially rewarded as a result.
During the daytimes (When I'm awake and not sleeping till the early afternoon), I find a good way of curing boredom is to play computer games which require a lot of time (I've been playing Football Manager and Final Fantasy games recently), or just simply going on long walks rather than relying on public transport, wasting both time and giving myself exercise at the same time.