Due to logistical considerations (being in Israel for something else), I would only be able to hike the trail starting in the second half of July, probably around July 24th. Is there any way this would be safe/recommended? I'm assuming at the very least, it should be a North-South (which I would prefer anyways), there should be plenty of water drops in the South, one should carry a cell phone (and I actually have a SPOT device, which I assume has coverage on the INT)...
I've been leading hiking trips for a freshman orientation program at my university for three/four years now, as well as other hiking trips. In terms of hiking in desert, I've done a rim (South) to river and back in the Grand Canyon, but it wasn't especially hot as it was only early June.