Heat training

Europe is currently going through a heat wave and I need to prepare for temperatures of over 30 degrees while I am swimming 2.4 miles, cycling 112 miles and running 26.2 miles.  I will be on the go for up to 15 hours and the temperature in the UK at the moment does not help with my preparation.  Today I decided not to go out into the rain and wind and started my turbo session at 6am.  I continued for 75 minutes and practiced my hydration as when you are outside in the wind and rain you are not so tempted to drink - indoors when the sweat is poring off you drinking is much easier.  Tomorrow I go to my "training camp" abroad and will concentrate on my running and swimming but I will keep you informed as to how I am getting on.  Hope you get some better weather while I am away!