Auckland Transport is blaming last year's Rugby World Cup for recent falls public transport patronage, particularly on trains.
The council body says a 0.5 per cent fall in overall public transport trips last month compared with August last year - and a 4.4 per cent decline in rail patronage - was because of unfavourable comparisons with extra activity in the lead-up to the rugby festival.
It says that without the inflated patronage at that time, last month's rail patronage would have been 7.5 per cent higher than for the previous August and there would have been 5.7 per cent more public transport trips in general.
Northern Express services along the busway also suffered a patronage drop, of 2.5 per cent, although other buses carried 0.1 per cent more passengers and there were 3.6 per cent more ferry rides taken this August.
Public transport patronage for the 12 months to the end of August increased by 7.3 per cent to 71.6 million boardings of buses, trains and ferries.