**October leads with strong trader consensus at 72.5% implied probability due to exceptional early-month rainfall totals already exceeding 60 mm at key Melbourne gauges, driven by a major low-pressure system and rainband in early October that delivered Melbourne's wettest day in 16 years with up to 48 mm in 24 hours.** This event produced flash flooding and aligned with spring patterns of variable but intense precipitation. El Niño conditions, now strengthening, favor below-average rainfall across southeast Australia through spring and summer per Bureau of Meteorology outlooks, reducing prospects for November or December surpassing October's accumulation. Historical averages show November typically wettest, yet current observational data and model consensus on drier follow-on conditions underpin the market positioning ahead of further BOM updates.