Traders see near-even odds across a wide range of minimum temperatures for Kuala Lumpur on August 25 because short-range forecasts and ensemble models show modest uncertainty around the typical overnight low. Official guidance from Malaysia’s Meteorological Department and global models currently points to a minimum near 25°C under partly cloudy skies with isolated thunderstorms, consistent with August climatology of 23–25°C lows driven by high humidity and limited nocturnal radiative cooling. Key differentiating factors include cloud cover and convective rainfall: persistent thunderstorms or thick cloud would trap heat and push the low toward 26–28°C or even 31°C+, while clearer breaks allowing stronger longwave radiation loss could dip it to 22–24°C or, less likely, 21°C or below. Current conditions show no strong monsoon surge or unusual humidity spike to shift this balance sharply, leaving the market split between the most probable mid-20s outcomes and tail risks from forecast variability. Updated model runs and official briefings over the next 48 hours will likely resolve much of the spread.