Rainfall Chances Increasing Next Week For NSW

For the last several days, NOGAPS computer modeling output for Australia has suggested that there might be increasing chances for rain over the next week leading up to May 1st, likely thunderstorms, particularly over New South Wales (but hopefully also extending up to Brisbane).

These forecast rains seem to reflect the autumnal seasonal shift. I wondered whether they have as a Northern Hemisphere analogue the greater likelihood of rain in California after November 1st, but I'm probably getting ahead of myself. After all, the analogy isn't exact - NSW and California are on opposite coasts of their respective continents - but I just can't help speculating!