Weather is probably a major factor when you plan your trip to Sipitang, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and August, with an average temperature of 26°C, while the coldest months are February and March, with an average of 25°C. The rainiest months in Sipitang are November, January, December and March, with each month seeing an average of 442 mm of rainfall.