Current forecasts from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) indicate a daytime high near 33°C for Metro Manila on May 18 under easterly flow with a 30% chance of afternoon showers. This keeps 34°C the market leader at 35.5% because scattered cloud cover and brief convection typically cap afternoon peaks just above the seasonal baseline of 33–34°C. Traders assign 26.5% to 35°C and 24.5% to 33°C because model runs still differ on the exact timing and coverage of any thunderstorms, which can either suppress or briefly enhance heating depending on when they develop. Historical May data show that fully clear skies can push readings to 36°C, but the present moisture pattern makes that outcome unlikely at only 9.2%.