**Market-implied odds strongly favor a lowest temperature of 9–10°C for Cape Town on August 21, 2026, reflecting consensus from official forecasts and recent model runs.** Multiple sources, including the South African Weather Service and numerical guidance such as GFS/ECMWF equivalents, project an early-morning minimum near 9–11°C at representative stations like Cape Town International Airport, with radiational cooling under partly cloudy or clear conditions overnight. Current observations show dawn readings around 9–10°C amid light southwesterly winds and high humidity (85–99%), consistent with stable high-pressure influence typical of late winter rather than a sharp cold front. Recent August minima have ranged from 5.3°C to 11.6°C, with the past week averaging near 8–10°C, placing today’s expected low close to climatological norms without anomalous cooling. Model agreement on modest overnight lows, combined with no incoming Arctic air or strong northerly flow, underpins trader positioning around these thresholds while assigning negligible probability to extremes below 6°C. Updated forecast briefings and hourly data releases through the day remain the key near-term catalysts for any shifts in implied probabilities.