Weather forecast, alerts and UVB index for all South African provinces, 21 July 2021 This forecast is designed to be a quick overview of what lies in store. Weather data provided by the South African Weather Service. For a detailed forecast of your province, click here. Severe Weather Alerts IMPACT-BASED WARNINGS: Yellow level 2 warning for RAIN resulting in localized flooding, is expected in the Overberg, City of Cape Town, Cape Winelands and the coastal areas of the Garden Route Districts in the Western Cape, spreading to Port Alfred in the Eastern Cape. Yellow level 3 warning for SNOW leading to possible loss of livestock and crops is expected over the high lying areas of the Western Cape and Eastern Cape, as well as the southern interior of Namakwa in the Northern Cape.