The real story is the humidity. Relative humidity often sits between year-round. This high moisture content in the air makes the heat feel much more oppressive, especially in cities like Kuala Lumpur or Johor Bahru. The Two Monsoons: Southwest & Northeast Unlike India or Vietnam, Malaysia does not have a distinct "dry season." Instead, the monsoons determine which part of the country receives the heaviest rain.
Located just north of the Equator (between 1° and 7° North), Malaysia has a tropical rainforest climate. The nation is hot, humid, and wet all year, with very little temperature variation. Instead of the four seasons (spring, summer, fall, winter) found in temperate countries, Malaysia experiences two primary monsoon seasons. Constant Temperatures & High Humidity Forget about cold weather. In both Peninsular Malaysia and the states of Sabah and Sarawak on the island of Borneo, daytime temperatures consistently hover between 27°C and 35°C (80°F to 95°F) . Nighttime offers little relief, with lows rarely dropping below 22°C to 24°C (72°F to 75°F) . malaysia climate