Welcome to Basenotes. I hope we get some good answers to you. Of course you've got the best idea already--going down to the smellies counter and trying what's there. Still, in some hot summer weather a few years ago I wore Givenchy Pour Homme for a while. I liked it and it might be what you're looking for. Woody in a wine cask sort of way, maybe not perfectly incense-y, or perfectly patchouli, but still, a nice flavor with some heaviness that did work in the warm.
Course you might hate it when you smell it, but what can one do?
Oh, and I'm referring to the Givenchy Pour Homme that comes in the red packaging, not the blue one.