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 Auckland
- Forecast accuracy for Christchurch
- Forecast accuracy for Wellington
- Forecast accuracy for Manukau City
- Forecast accuracy for Hamilton
- Forecast accuracy for Tauranga
- Forecast accuracy for Dunedin
- Forecast accuracy for Lower Hutt
- Forecast accuracy for Palmerston North
- Forecast accuracy for New Plymouth
- Forecast accuracy for Hastings
- Forecast accuracy for Napier
- Forecast accuracy for Rotorua
- Forecast accuracy for Porirua
- Forecast accuracy for Invercargill
- Forecast accuracy for Papatoetoe
- Forecast accuracy for Nelson
- Forecast accuracy for Whangarei
- Forecast accuracy for Whanganui
- Forecast accuracy for Upper Hutt