Sydney has had its wettest start to autumn in over 2 decades. An upper level cold pool of air and moist southeast winds have combined to bring more heavy rain to Sydney.
The city picked up 31mm, bringing the monthly total to 182mm. The suburb of Riverview received 41mm to 9am, lifting their monthly total to 176mm and their wettest in 8 years for April.
Autumn has brought a total of 380mm to Sydney so far, which is 124mm above the average. This is due in part to the La Nina event that we have experienced since July.
The La Nina brought record high rainfall across much of northern and eastern Australia, but Sydney had largely avoided the effects of the La Nina until autumn.
Climate models indicate that the La Nina will weaken through autumn and that neutral conditions should return through winter. This should see rainfall across northern and eastern Australia trend closer to average.
Winds should tend southerly today bringing a mostly cloudy but generally dry day.