Bureau of Meteorology senior climatologist Greg Browning said RAAF Base Tindal, where Katherine's weather station sits, has already recorded 1295mm of rain, surpassing the average total rainfall of 1025mm with any rain in April still to come.

Mr Browning said this puts the town's current wet season in the top five wets on record for most rainfall.

This includes 253.6mm in March, much higher than the 159mm average.

Mr Browning said the high rainfall total last month was mainly due to a 107mm drenching in a single day on March 18, which was the highest single rainfall in Katherine so far this wet season.

Mr Browning said the heavy rain is likely to go away in April, as the Top End shifts to the dry season.

"Zero to 20mm is probably most likely (for April's total rainfall)," he said.

He said residents should not expect any further monsoon systems as April progresses, describing a "very low probability" of heavy rain across the Top End of the NT.

"Certainly nothing monsoonal is going to track down as far as Tindal."

The successful wet season is a welcome relief for Katherine residents, after several dry years including the worst wet season in 58 years in 2019/20.

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