Weather is probably a major factor when you plan your trip to Gua Gomantong, but bear in mind that cheaper options are usually available when the weather isnโt as good. The hottest months are usually May and April, with an average temperature of 26ยฐC, while the coldest months are February and March, with an average of 26ยฐC. The snowiest months in Gua Gomantong are April, May, August and July, with each month seeing an average of 211 cm of snowfall.