For indicas and hybrids depending on what size you want and what traits the strain have , but lets say you want a 5 feet tall sativa dominant hybrid, that would need about 1 month of veg time and then 9-11 weeks of flower. This means you would harvest the plants around 3-4 months after planting. It would be even faster in Thailand because it would start to flower earlier if you grow it outside since we only have 10-13 hours of daylight.
A pure indica or a indica dominant hybrid would be even faster since the flowering times for most of them is 7-9 weeks depending on the strain. That would mean that you would be able to harvest around 3 months after planting.
Then we have autoflowering hybrids, these are even faster. However you would have to use additional lights because these need longer hours of sunlight than Thailand can provide so they would end up pretty small.
However, pure equatorial sativas(like in thailand and laos) can take up to 200 days of flowering to be fully finished, this is because they re-veg and flower at the same time.