Recent post-frontal warming following a cold front's passage has driven South African Weather Service and ensemble model consensus toward a daytime maximum of 28°C in Cape Town on August 13, 2026, under mostly clear skies and light-to-moderate northerly winds that enhance boundary-layer mixing and insolation. This aligns with observed recovery from cooler conditions earlier in the week and matches the narrow range of official guidance, explaining the market's near-certain consensus on that precise threshold. Minor shifts in wind timing, cloud cover, or localized measurement at the primary station could still produce a 1°C deviation, though current data strongly constrain such outcomes.