Drier Southwest Monsoon conditions forecast by Singapore's National Environment Agency for the first half of August are the main driver behind market-implied odds favoring a 32–33°C daily maximum on August 11. These patterns typically reduce cloud cover and rainfall, allowing greater solar heating and pushing afternoon highs above the long-term August average of near 31°C. Recent NEA guidance explicitly projected 33–34°C ranges on most days through mid-month, consistent with station data showing recent peaks near that level and limited cooling from moderate southerly winds. Model consensus points to fair, occasionally windy weather with only isolated afternoon showers possible, keeping the probability of 34°C or higher low but non-zero if conditions remain drier than expected. Official resolution will rely on verified Meteorological Service Singapore observations.