That temperature and humidity is not extreme for them but hard wind is...try to keep them out of the wind and spray water on them.
We also have wind now, not extreme but more as usual...and no rain for months, 35 celcius is normal. They will come back.
I'm trying to get a potted rambutan to bloom, didn't water it for 2 months and no rain...it started to drop many leaves so i watered it again and now it grows again, no flowers though.