Suggest Remedies For Constant Headaches During Summer

I m 22 year old.i get headache on ly left side of head.my headache startwhen summer start.when i have to travel in sun it cause Headache.If i take bath twice or thrice some relief,Oil massage on head and sleeping help me in having better state after headache..Any medicine that u can suggest me and anythng lese that u can suggest