1. Choose Fabric Type
Not all fabrics are created equal. In fact, some will wreak havoc in heat. Synthetic materials like polyester, nylon and acrylic feel more claustrophobic as the man-made materials keep warmth close to your body.
Natural fabrics like cotton and linen are your best options as they are breathable and cool. I also like silk because it’s super light. Just keep in mind that silk will absorb sweat, so wear sleeveless shirts on hot days.
Sports fabrics are another option. Thanks to the sweat absorbent technology, you will not get wet.
2. Clothes size
There’s a reason why loose and medical clothing is paramount in warm weather. They are more comfortable! Tight clothing will generate heat and increase body temperature. Did you know that sweat goes down your back and makes your clothes stick? That doesn’t happen when you are in the pocket of the bagger. 
3. Cool colors
Are you the kind of white person after the labor day? If so, I ask you to reconsider. First of all, that rule was exposed by Emily Post, the queen of the ritual. Second, white is classy. And finally, that’s the key when you want to stay calm. Pastels are also a good option. (And if you want to be the trend with the Fall 2019 color scheme, check out the pistachio and light purple colors.)
To get past the last weeks of summer when it’s still hot and humid, pay attention to what you wear. Choose fabrics that are natural, lighter, and lighter in color.