Recent forecast models from the South African Weather Service and international ensembles point to a daytime high near 22 °C in Cape Town on May 19, driven by a high-pressure ridge over the western Cape and moderate southeasterly flow off the cool Benguela Current. These conditions typically limit afternoon warming while suppressing strong onshore advection that could push readings higher. Traders currently assign the highest probability to 22 °C because most runs cluster within 1 °C of this value, with small divergences arising from uncertain low-level cloud cover and exact timing of any frontal passage. Historical May climatology shows average maxima around 19–20 °C, so any clearing or reduced wind would favor the 23–24 °C outcomes still priced above 20 %.