Weather will likely play an important role when you plan your trip to Rengat, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually September and August, with an average temperature of 26°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Rengat are November, April, March and December, with each month seeing an average of 302 mm of rainfall.