Recent weakening of the northeast monsoon has reduced cloud cover and showers over northern Taiwan, enabling stronger daytime solar heating and pushing forecast highs for Taipei on October 4 into the 31–33°C range according to Central Weather Administration guidance and ensemble models. High humidity near 70–80% and light easterly winds limit evaporative cooling, while urban heat effects in the basin can add 1–2°C locally. Most guidance shows peak readings near 32–33°C under partly cloudy skies, with limited upside to 34°C if insolation increases further; cooler 30–31°C outcomes would require unexpected persistent cloud or earlier monsoon reinforcement. Official updates and afternoon observations will determine final resolution.