Hong Kong's June rainfall outlook centers on the southwest monsoon's onset and variable tropical cyclone contributions, with the Hong Kong Observatory forecasting normal to above-normal totals for the month amid above-normal temperatures. Early June conditions reflect typical early-summer patterns, where steady monsoon flows deliver baseline precipitation while typhoon tracks and intensity introduce high variability—cyclones often account for 30% or more of monthly rain. The closely matched market bins around 375–500 mm reflect uncertainty in cyclone frequency and steering patterns during the emerging El Niño transition, which can modulate South China Sea moisture transport without clear historical suppression in June. Upcoming model runs and any early tropical disturbance development will likely refine these probabilities.