Higher than average rainfall in September will help production in the state exceed 9 million tons for only the third time in history, reports The Australian Financial Review.

Wheat farmers are happy. Well-timed rains mean high-protein grains which will be sold into a world market with a shortage of basic crops.

"A couple of fronts have come through that have finished things off to a T," WA Farmers Federation president Mike Norton said.

Very healthy production around Geraldton would lead to a bottleneck at that port if growers did not make early sales, he said.

Other elements in the supply chain would run smoothly.

"Our handling systems over here, while we do complain a bit at times, are head and shoulders above what you have over east," he said.

The national wheat harvest is looking good, if not as healthy as WA's, according to Cargill Australia general manager Mitch Morison.

"The fundamental picture is still pretty bright, which should underpin grain prices for the next eight months."

Mr Morison believes Australia will be one of only a few grain powerhouses this year because Europe's crop is slender and the corn market in the US is suffering a shortage.

"The corn crop is expected to be a lot smaller than initially forecast so wheat is being put into the feed ration instead of exported for milling purposes," he said.

The only hitch is getting the crops out of the country.

"There is enough capacity at the ports but the biggest issue is we can't get the bloody stuff to the ports," Mr Morison said.

"A big part of it is the inefficient rail industry in Australia. Our infrastructure is so outdated," he said, pointing to rail wagons in parts of the state that reach their top safe speed at 10 km/h.

"The NSW government is not going to spend any money on upgrading rail and hasn't done for the last 25 years."

ANZ senior agricultural economist Paul Deane, in research released on Friday, said WA exports were so strong they would fill demand in the traditional markets of Japan, Korea and south-east Asia. Wheat would have to be sold to "less predictable" markets in China, India the Middle East and North Africa.

Mr Deane argued that North Africa was the hardest market to crack and doing so could discourage planting in the future.

"If WA wheat is forced to price into North Africa at some point in the next 12 months, WA new crop basis could come under pressure."