For me summer weather mostly means allot of work (I'm in the landscaping business) but it also means allot more running, trips to the beach, and of course plenty of cigars.
My summer weather rituals - if you want to call it that - normally center around getting in as much rock climbing in as possible, of course it helps when you're only a 10-15 minute drive from an world class bouldering area
but I also have a few climbing trips planned.
I'd really like get out to at least one major Burning Leaf herf this summer, but that falls more under vacation time but for some thats just as much a ritual as anything else.