Kevin Long said he predicts there will be less than half the average amount of rain between April and June.

"For many compounding reasons, I forecast this year will set many new regional driest records at less than 33 per cent of average yearly rainfall," he said.

"There is the very real possibility this autumn and winter will continue on being dry - drier than what is needed to grow normal amounts of grass or sustain a crop through to harvest."

Mr Long has interpreted data from the Bureau of Meteorology and analysed the influence of sunspot activity and lunar cycles. 

Read more: Bendigo starts 2019 with record hot, dry conditions

The BOM said rainfall was not predicted to be so low across the next month or quarter. 

"Our outlook for April is definitely not showing below average rainfall," climatologist Jonathan Pollock said.

"Some patches in the far north west are favouring a drier month but the outlook shows neutral conditions for most of Victoria.

"We are not expecting a particularly wet or dry month ahead."

Mr Pollock said the two factors that influence rainfall in Victoria - an El Nino in the Pacific Ocean and the Indian Ocean Dipole - both appear to be neutral at this stage and therefore will not have an effect on rainfall patterns. 

But Mr Long said the driest year on record for Bendigo was 1982 when the region only averaged 17 millimetres per month. 

So far less than seven millimetres a month has been recorded since December.

"The average decade rainfall is forecast to continue reducing for many decades as it has done since the wettest decade on record - the 1970s," Mr Long said.

"Bendigo recorded 627 millimetres that year compared to the 416 millimetres in the 2000s, which was the lowest in our records since 1863.

"This reducing rainfall trend is most likely to continue for another three decades."

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