Wow, surveyor. Great advice. Sometimes I will get rattled at by mum for going out on a long-distance ride when it hits a high of 95+. The simple matter is one must simply adapt. For me I think of 12n to 1pm as the "crucial hour"--when the temperature peaks at my area. That hour I will usually spend eating lunch, resting under a tree, etc.
Plus, you get to look very manly after riding all day through high heat.