Planning for the weather is an important factor for making your trip to Rumah Gadong a success, especially when you’re splurging. The hottest months are usually May and August, with an average temperature of 27°C, while the coldest months are February and March, with an average of 26°C. The rainiest months in Rumah Gadong are November, December, January and October, with each month seeing an average of 368 mm of rainfall.