Yes.

Do you have a solar screen you could put them under. That would slow evaporation even more. If they can hang them for a month or more I don't see why not. How old are they?

They will be fine. Solar screen is an excellent idea if it will minimize your concerns.

I have the same temps with very high humidity. My plumerias are planted in-ground, in full sun and only receive water when it rains. My mature potted adenium (I only have one) sits in full sun and is watered every 10 days.

- Maria Elena

2-3 years old. I have some babies also but I will give them to someone to take care of them (easy to move them). I can try to move them to a place where they will receive less direct sun. Thanks for your help.