How we measure accuracy
Every forecast published on Zefita is stored and compared the next day with real observations from official weather stations. We calculate the mean temperature error, the share of days forecast correctly within ±2 °C and how often rain was correctly predicted. The method follows World Meteorological Organization guidance.
Cities
- Forecast accuracy for Johannesburg
- Forecast accuracy for Cape Town
- Forecast accuracy for Durban
- Forecast accuracy for Pretoria
- Forecast accuracy for Soweto
- Forecast accuracy for Gqeberha
- Forecast accuracy for Soshanguve
- Forecast accuracy for Pietermaritzburg
- Forecast accuracy for Evaton
- Forecast accuracy for Benoni
- Forecast accuracy for Bloemfontein
- Forecast accuracy for Thembisa
- Forecast accuracy for East London
- Forecast accuracy for Vereeniging
- Forecast accuracy for Boksburg
- Forecast accuracy for Welkom
- Forecast accuracy for Newcastle
- Forecast accuracy for Krugersdorp
- Forecast accuracy for Rustenburg
- Forecast accuracy for Emalahleni