The first thing that comes to mind - "ponytail". This women's hairstyle allows you to open the neck, which is important in the heat. Ponytail can be done on a different style - high, low, or parted smoothly combed hair. The ends of the hair can be curled or twisted into a plait.
The second hairstyle - a lump of hair on top. This is a logical continuation of the "horse's tail." These hairstyles can be seen in gymnasts. With a good figure and a beautiful shape of the head of this "minimalist" will look very aesthetically pleasing. You can decorate the "bump" beautiful barrettes, decorative elastic band or artificial flower.
Another option for a hot summer hairstyles - weaving braids. Spit - still in vogue. You can make intricate fringe of the braid weave many French braids, collect from them complicated updo.
The fourth way: the hot weather weave African braids. This hairstyle will make you in the barbershop. Itself the first time such details do not work out. African braids are very comfortable and practical to wear. Hairstyle is done in two or three weeks, you can wash your hair, do not untwining braids. But if time does not untwist, there is the risk of losing some hair. We must be careful.
The fifth option: if you have short hair, you can make it a little shorter, and so that the hair does not touch the neck and shoulders. Especially because today short haircuts for women back in great fashion: high quads, Garson, Bob. Just do not cut off recklessly long hair under a "boy". The heat will pass, and you will be a few more years to go with you unsuitable hairstyle.