https://says.com/my/amp/news/explained-why-...t-so-hot-lately

We officially entered the Southwest Monsoon season on 10 May


That means winds blowing in from the southwest, drier air, and fewer rain clouds.

More sunshine = hotter days. Basic math.

You might still see early-morning thunderstorms, like this morning, 29 May, known as "squall lines" — a line of thunderstorms that can dump heavy rain, especially along the west coast.

But overall, it's a season built for excessive heat, and is expected to continue until September.

In fact, from July to September, which is the peak of the season, there is a possibility of local and cross-border haze if open burning activities are not effectively managed, METMalaysia warned.


And if you're in the Klang Valley, and feeling like you're living inside a furnace, we have the Urban Heat Island (UHI) effect to thank for it


Cities like Cyberjaya, Kuala Lumper, and Selangor are covered in concrete, asphalt, and buildings that soak up and hold onto heat during the day and slowly release it at night. Add in heat from cars — which we have more of than people, air conditioners, construction, and barely any green space, and it's like a furnace.

And it's not just a theory, it's backed by data.

According to a 2023 study, the temperature difference between urban KL and nearby rural spots could be a whopping 16.1°C to 26.73°C in 2021. Even in 2004, the Klang Valley's UHI effect was already adding up to 5.5°C to ambient temps