The best time to visit Malaysia is between March and October. In Borneo, the main rainy season is November to February, though the rains can be unpredictable – so expect some to fall even during the peak period. The temperature is hot and humid all year round.
The west coast of peninsular Malaysia is an all-round destination, as although it is sunniest between December and March, it is hot and humid all year, and rain can come unexpectedly at any time. For those visiting the east coast, the best time to visit is between March and October; just like in Borneo.