Maybe. I am located 9N, so more tropical than you I think.
The male salak trees have always produced lots of pollen, even at times when the females were not flowering. Research and experimenting proved that by always cleaning the females of all dead material, cutting away completely un pollinated flowers, old fruit stems, lower leaves, etc. The females started to fruit over a longer period.
Salak has certain peaks of production but I can almost always find some ripe fruit any day of the year here. My weather is very similar to parts of Malaysia and Indonesia. We have two seasons of mangosteen and durian for instance. That is not so everywhere in Costa Rica but on the Caribbean coast it works.
Peter