Weather is probably a major factor when you plan your trip to Tenghilan, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and May, with an average temperature of 23°C, while the coldest months are February and January, with an average of 22°C. The rainiest months in Tenghilan are May, June, November and January, with each month seeing an average of 510 mm of rainfall.