First of all, I'm not sure why this is in Touring ... did you mean to put it in Training and Nutrition?

Secondly in answer to your question ...

1. Wear the sunblock to protect yourself against sunburn.
2. Wear light coloured clothing and a light coloured helmet. You may want to get a helmet with a visor to shade your eyes from the sun, and if it is sunny, you'll probably want sunglasses.
3. Take electrolyte pills. Take them before you ride, and if your ride is more than a couple hours long, you may need to take one every couple hours.
4. Drink a glass of water before the ride, when you take the electrolyte pills.
5. Drink one 750 ml bottle of water and/or sports drink every 1-1.5 hours. If it is hot, you might want to drink one every hour.
6. Put each bottle in a sock. Soak the socks thoroughly with water. Then put the bottles in your cage. The wind blowing over the wet sock will help keep the water cooler for a little while longer. You may have to experiment with which socks work best.
7. Ride early in the morning or later in the day when the sun starts to go down.


Your place of employment, your local weather website, the websites for your local TV, newspaper, etc., should all have this sort of information and if you're in an unusual heatwave just now, that information should be easily accessible.