New venues for three of those matches later this month have already been secured, but the January 5 clash between the Perth Scorchers and the Sydney Thunder, and Perth's game the following day with the Sixers are still yet to find a new home.

Cricket ACT has indicated it could take on one or both of those fixtures at short notice, with Manuka Oval available for both of those dates.

"We understand this is a disappointing decision for the Scorchers' passionate fanbase, but in the current environment we want to provide certainty for members, fans, players, match officials and staff," Big Bash boss Alistair Dobson said.

"While our preference was to play these matches in Perth, this was simply not possible under the current arrangements when all factors are taken into account."

Manuka Oval hosted the Thunder's season opener earlier this month against the Brisbane Heat, and is scheduled to conduct the Thunder-Scorchers game on December 28.

A Women's National Cricket League match between the ACT Meteors and NSW is the next scheduled assignment for the ground, on January 7.

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That would likely require Cricket ACT ground staff to prepare a second wicket, should Canberra be called upon to host either of those available Big Bash games.

The capital was last week thrown up as an option to host the fifth Ashes Test, which CA were also forced to move from Perth, but that was awarded to Bellerive in Hobart over the weekend.

Meanwhile, local cricketers will contest the final regular season round of this summer's one-day John Gallop Cup on Saturday, which has been decimated by rain.

ANU is one of five clubs vying for the last two available finals spots, despite having played just one one-day match this season. They host Western District who are also in the mix.