You need to ferment in a cool place, so you can only ferment pickles in the monsoon season when temperatures are down, or inside a house with A.C.
Vegetables turn soft if it's too hot. Taste and feel is important here. Soft vegetables are the biggest problem if it's too hot. On the 3rd day it is good to place in the fridge to slow the fermenting, if you can.
Crocks may be wrapped in burlap, palm dry, & kept wet in a cool shade place with breeze. Cloudy days are a big help. Place a plate on top of crock to keep insects dirt out. So it can be done with care. I'm in the South Phillipines, and it seems to work on the shady side of the house under the second floor A.C., where dripwater hits a wrapped crock, along with the breeze in the monsoon season.