Our Brazil and Peru Tours
Fortunately Marco had warned us, so we took with us our fleeces and hats (we could bring with us only a sub-set of all our gear). Other travelers were not so fortunate, and had only their summer clothes, so they were even more miserable than us.
Still, we had tours through the forest, seeing a family of Giant Otters, a few blue and yellow macaws, lots of squirrel and howler monkeys, but no snakes. I guess one good thing about the temperature was the lack of mosquitoes and insects.