Yes, I remember that Chiang Mai hot season. It was a test for someone from London!
Our banana plants are supposedly amongst the biggest in this region, perhaps in France, exclusively because of the high walls around them which protect from the crazy winds we get here. That and the fact we are next to an old church which I have found to generate a signal which is good for plants. Anything growing right next to the church booms. Further away not so good. In a word this is because of Electroculture and if you don't know what that is I recommend joining the electroculture community where a few of us are sharing our experiments and results.
This post in particular discusses the church a little and offers some ideas about how we might replicate this energy in our garden: https://peakd.com/hive-198415/@samstonehill/increase-growth-potential-by-x10-with-the-worlds-first-cosmic-cucumber-cone
Thanks, I'll have a look.