Personally. I drink alot... Alot. And stay out of direct sunlight if I do go out. Sun is just too intense. Try to stay in the shade.
But water is the most important thing I do. Even if I'm not thirsty I drink. And just water. I'm not a Gatorade person. Or flavored drink. Other than that I try to stay inside until late evening.
It's a definitely be cautious outside.
R.