Seasonal Climate Outlook

Recent climate

Rainfall for 1 to 27 September was average for the SWLD, with Pemberton receiving 167 mm. Rainfall decile map 1 April to 27 September indicates decile 1 to 3 rainfall for the central-west, parts of the central wheatbelt, lower west and south-west forecast districts of the SWLD. Parts of the central Wheatbelt, Great Southern, south-west, south coastal and south-east coastal forecast districts, have received decile 8 to 10 rainfall.

For information on climate drivers refer to the Bureau of Meteorology’s climate driver update.

Rainfall to date map for the South West Land Division for 1 to 27 September 2023. Highest falls was Pemberton 167 mm.
Rainfall to date map for the South West Land Division for 1 to 27 September 2023
Rainfall to date and rainfall decile map 1 April to 27 September 2023, indicating decile 1 to3 rainfall for parts of the central west, central wheatbelt, lower west, south west, Great Southern and south east coastal forecast districts of the SWLD
Rainfall to date and rainfall decile map 1 April to 27 September 2023

The potential yield map indicates the maximum yield possible given rainfall in the absence of any other constraints. Estimates of potential wheat yield is obtained using the French and Schultz potential yield model. Here two water use efficiency values are shown 12 and 15 kg/ha/mm and evaporation of 90 mm (for later sowing and emergence, as the majority of the SWLD had a late break this year) with a decile 3 rainfall finish (as this is what the majority of seasonal outlooks are indicating). For location specific potential yield information, with selection of evaporation and WUE, see the potential yield tool.

Potential Yield map 27 September 2023 of the South West Land Division using Water efficiency of 12 kg/mm/ha and evaporation of 90 mm, indicating yield range of 0.5 to greater than 3 t/ha with a decile 3 rainfall finish.
Potential yield map 27 September 2023 of the South West Land Division
Potential Yield map 27 September 2023 of the South West Land Division using water efficiency of 15 kg/mm/ha and evaporation of 90 mm, indicating yield range of 0.5 to greater than 3 t/ha with a decile 3 rainfall finish.
Potential yield map 27 September 2023 of the South West Land Division

Seasons