It is even more important to stay hydrated as sweating causes water loss. Make sure you take on extra liquids to keep hydrated and avoid over heating.
Plan your runs early in the morning or late afternoon and evening when the temperature is a bit cooler.
If you can’t run during cooler times, find some shade like a forest of some woods.
Keeping cool places extra stress on your body, so doing strenuous workouts in the heat I can lead to exhaustion
Again, because your body is working hard to keep you cool, you might see the pace on your watch well below what you would normally expect. Don’t try and keep up with your normal pace, use effort as a guide and don’t worry about the watch.
It is important to make sure you are protected from the sun especially when out working out for long periods.