From: Alexandria, Scotland
Yuh actually I am no longer 100% sure. I may have this wrong - its certainly in Jan - April at present.
What we have is the North East Monsoon but I think I have gotten myself turned round by the map angle because the area we are talking about should be more impacted by the south west.
"Burma has a tropical monsoon climate - cloudy, rainy, hot, humid summers (south-west monsoon from June to September); less cloudy, scant rainfall, mild temperatures, lower humidity during winter (north-east monsoon from December to April). The terrain is marked by steep rugged highlands surrounding central lowlands. Natural resources include petroleum, timber, tin, antimony, zinc, copper, tungsten, lead, coal, some marble, limestone, precious stones and natural gas. Burma is subject to destructive earthquakes and cyclones, flooding and landslides common during rainy season, and deforestation."