Traders' close split between 33°C (37%) and 32°C (34%) as Singapore's highest temperature on March 26 reflects ensemble model forecasts from ECMWF and GFS, which show peak daytime highs clustering in this narrow range during the inter-monsoon transition. Recent NEA updates highlight persistent low-level winds and urban heat island effects pushing toward 33°C, as seen in prior days' 34°C+ readings, but increasing afternoon thundershower probabilities—tied to diurnal sea breeze convergence—could suppress peaks to 32°C by enhancing cloud cover and evaporative cooling. Climatological March averages hover at 32°C, with El Niño's lingering warmth adding upside risk, though model spread underscores uncertainty in convective timing.