I only recently discovered the joy of pre-breakfast rides. For me, that's at 10:00 or even 11:00 AM, since I work 2nd shift and have to sleep late. Still, it's cooler in the late morning than in the afternoon, and the oatmeal sure tastes good when I get home.
Household hint: I put the oatmeal and the water, sugar, fruit, peanut butter (yes, I eat peanut butter in my oatmeal!) in the dish before I ride. Then I just microwave the whole mess while I'm changing out of my cycling clothes. Can't wait for that breakfast after an hour long ride!