I am the same way, every summer I either flare or have some kind of complication like an obstruction. I have most of the summer months off because I am a teacher so my GI teasingly said maybe I should get a summer job so I could avoid another flare. Most teachers look forward to summer break, but I would rather work than be sick again.
Good luck with getting your flare under control.
Dx'd with Crohns 1984
Polycystic kidney disease in 1996
Bowel Resection surgery 2006, Now on Asacol, Imuran, Folic acid, and Enalapril.