Heavy rain and resulting ground closures saw all NTFA division one matches and some NTFAW games called off last weekend, with junior soccer also a casualty.

The decision to close venues attracted some criticism on social media, but City of Launceston mayor Albert van Zetten said it was the only reasonable option.

Cr van Zetten said venues such as Churchill Park, Youngtown, Rocherlea and Lilydale were all set to reopen for this weekend, with Invermay Park likely to be available by Thursday.

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"Our staff will do a further assessment later in the week, but at this stage we fully expect all of our grounds to be open," he said.

"We did get some feedback last weekend when we announced those grounds would be closed, but I'm not sure people realise just how much rain has fallen across Northern Tasmania over the past month or so.

"It has been much more than previous years - about 30 per cent above the July average - so the impact to our sporting grounds has been considerable.

"Once a ground has been impacted in this way, it cannot be rejuvenated easily or quickly and it takes a significant amount of work to bring it back up to a standard that is safe to play on.

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"No one wants to see these grounds closed - certainly not the council - but player safety is our number one priority when we make a decision to close a ground."

The NTFA finals begin on Saturday week.