Contacts burn when in warm spaces?

I wear soft contacts and they are comfortable when I am at school, working out/ playing sports and at home. But when I go to the mall or a school dance, they start burning. I tried to gently move my contact thinking that the side was scratching my cornea but it was "suctioned" to my cornea and made my eyes water when I tried to move it. (btw my hands were washed when I did this). It seems as if whenever I am in spaces with lots of people or heat, my contacts burn and sting. Why is this? the brand I use is biomedics toric. Help!!!