Weather is probably a major factor when you plan your trip to Subang, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually September and October with an average temp of 80°F, while the coldest months are July and August with an average of 78°F. The rainiest months in Subang are December, March, February, and January, with each month seeing an average of 14 inches of rainfall.