The kids and I hit the cottage for a week at the tail end of August. The UP was lovely and, after a HOT July/August, the big lakes were amazingly warm. Even Lake Superior. The week only had one cool day, otherwise it was perfect mid- to high-70s and plenty of sunshine.
I sometimes had to drag the kids away from the TV kicking and screaming, but they soon forgot that as soon as we got down the beach. I love those times where they zone out... we all would sink into our own headspace while playing with sand or water.
And the dog. He loved it and we all loved introducing him to it. We chucked the ball as far as we could down the beach and he fetched over and over again with amazing speed -- a full gallop that we hadn't really seen before. He also is quite springy and will jump like a deer over the dune grass.
He seems rather unfamiliar with the great outdoors (must've been a city dog in his previous life) so he was surprised by waves on the big lake, feathers on the beach, frogs on the deck...