Batu Pahat sits in southern Peninsular Malaysia near the equator, where rainfall is heavy and fairly consistent year-round, though the northeast monsoon from November through January still brings the wettest and most flood-prone weeks.
On Johor’s west coast, the city’s namesake river can rise quickly during intense monsoon rain. Because the region combines constant tropical rainfall with the added risk of intense monsoon downpours in December and January, radar remains a key tool for distinguishing routine afternoon showers from the sustained rain events that lead to river flooding. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map