Seasonal Climate Outlook

Bureau of Meteorology seasonal climate outlook

The Bureau of Meteorology's climate forecast system for monthly and seasonal climate outlooks is the Australian Community Climate Earth-System Simulator – Seasonal (ACCESS–S). It is a dynamical (physics-based) forecast modelling system and is a collaboration between the Bureau of Meteorology and the UK Meteorological Office.

The Bureau of Meteorology’s current seasonal outlook is indicating 45-75% chance of exceeding median rainfall for autumn, March to May 2020. Similar to the SSF, highest probabilities are for the South Coast. Predictive skill is poor to good (50-75% consistent). The longer-term outlook for April to June is also 45-75% chance, higher chances for eastern grainbelt.

Temperature outlooks for autumn, March to May 2020, from the Bureau indicate a 35-55% chance of above average day-time maxima (skill 45-65%) and 75-80% chance of above average night-time minima (skill 50-65%) for the SWLD.

Rainfall outlook for autumn March to May 2020 for Western Australia from the Bureau of Meteorology, indicating a neutral to above average outlook for the SWLD.
Rainfall outlook for autumn March to May 2020 for Western Australia from the Bureau of Meteorology.

Percent Consistent skill of the Bureau of Meteorology’s outlook for autumn March to May, indicating 50 to 75 percent consistent skill over the SWLD.
Percent Consistent skill of the Bureau of Meteorology’s outlook for autumn March to May.