Recent South African Weather Service guidance points to maximum temperatures of 20–21°C in Cape Town on May 18 under partly cloudy skies with light southerly winds, aligning closely with the market’s tight clustering around 21–22°C. These conditions favor modest afternoon heating above the seasonal climatological mean of roughly 19°C, though persistent marine air and limited insolation from variable cloud cover are expected to cap peaks near 21°C rather than permitting stronger warming toward 23°C. Model consensus shows no significant frontal passages or heat advection in the next 48 hours, leaving resolution dependent on final observations from the Cape Town International Airport station.