Welcome!
Yes the heat can stress them. Very heavy mulching will help keep roots cool and you will have to watch carefully to makes sure they are getting enough water since their relatively large leaves can transpire more than the foliage we are more used to. There's a reason most desert plants have tiny leaves! I've found that banana plants will get dead dry margins in their leaves during extreme heat rather than just losing turgor pressure like other plants. The damage can happen so quickly! Good thing they grow fast, new leaves will replace the damaged ones. Of course potted plants suffer worse in the heat than those planted in the earth.