Taking into account the local weather in Sungai Lalang can help you maximize your time at the pool during your trip. The hottest months are usually March and February with an average temp of 81°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Sungai Lalang are November, October, May, and September, with each month seeing an average of 12 inches of rainfall.