If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Sungai Lembing: The hottest months are usually May and June, with an average temperature of 27°C, while the coldest months are February and January, with an average of 25°C. The rainiest months in Sungai Lembing are December, November, October and September, with each month seeing an average of 360 mm of rainfall.