Yeah - there are other triggers, but they're usually worse in the summer because of the light and the heat, both of which are triggers for me. I've got my super dark glasses on and the a/c is running - but then again, it's always running these days.
When the headaches are more sinus-related, the coffee alone is often enough to get rid of it by about noon. When it's a migraine, the caffeine and Advil makes a dent, but it never really goes away until it's just ready to go away. I keep away from light and heat, have an extra cup of coffee and lots of water, and just ride it out.