Despite a recent United States Department of Agriculture (USDA) report which showed American farmers planted far more wheat than expected this season in a bid to profit from high grain prices, Mr Weeks believed Australian prices wouldn't necessarily plummet in the medium term.

The USDA report demonstrated a bearish outlook for most grains, including wheat and corn, which some Australian grain analysts said would be bad news for local grain prices.

But Mr Weeks believed there would still be an opportunity for WA growers to capitalise despite high tonnages of grain throughout the world.

With a large proportion of WA's bumper harvest still unsold or uncommitted, Mr Weeks encouraged a number of his clients to sell through February, March and April.

And with growers in the Geraldton port zone coming out of their biggest yielding harvest ever, many were happy to do just that.

"Where grain prices are going to go, nobody can say," Mr Weeks said.

"The only thing we know is the world has a lot of wheat on hand and the chances of seeing a significant shift in price between now and seeding is probably pretty low."

Mr Weeks said despite early fears sparked by the USDA report, prices during the next three or four months would always bounce around.

"If you could pick a period during the year when you don't expect prices to be doing anything very exciting, I would usually, but not always, pick mid-December through to late January or early February," he said.

"It's usually a pretty dull time in the market."

Mr Weeks said after Christmas growers who had warehoused grain usually started to get edgy about getting rid of their residual stocks.

But he encouraged them not to fear industry talks about falling prices because he saw no real logic to the claims, within the next three months at least.

But if it became apparent there was a large-scale world crop, which wouldn't be known until the middle of the year, then prices could certainly drop off.