You wear them on your hands when it is very cold outside.
Gloves
You wear it on your head when it is very sunny.
A cap.
You wear it when you swim.
swimsuit
You wear it on your neck when it is cold.
A scarf
You wear them on your eyes when it is sunny.
Sunglasses
You wear this on your body when it is cold. It is not a sweater.
A jacket
You wear them on your feet when you do sports.
Trainers
You wear them on your legs when it is hot or when you play football.
Shorts