Can the sun change the color of my hair?

Can the sun change my hair into a lighter blode?! my hair is already blonde, I'm the only one in the family who has the lightest color,(blonde)
The rest are all brown or black or brownish redish, so they all keep telling me that my hair is...

getting lighter and lighter!!
My grandmother thought I dyed my hair!!!
Could it be the sun making my hair lighter?!!!

yes, sun always does. in the summer time I get lighter brown streaks because I go 2 the beach a lot..
thats prob y. do you go in the sun a lot?

Oh yeah, my brown haired brother spent a lot of time outdoors every summer and every year his hair would get almost blond.

well, I live in saudi arabia, and it's always sunny here!! it's like there are no seasons except summer and SOMETIMES winter!! (not cold winters though!)

ya the sun can bleach your hair out if youre blond.

My little boy has dark blonde hair and since we have had the house with the pool and he has practically lived in that pool lol his hair has gone the lightest blonde colour. He has transparent eyebrows too lol.

lol