Large parts of NSW will be hit by a prolonged period of rain and storms after dry weather to start 2026.
The central and southern areas of the state have had some of the lowest rainfall at this time of the year on record, but that is set to change.
The impact has already been seen, with Sydney copping around 3.4mm of rain in around an hour last night, and rain and storms are set to close out the rest of the week across the state.
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Storms in Sydney later today could bring up to 15mm of rain, with the rainfall becoming heavier over the weekend.
Ex-tropical cyclone Koji, which made landfall in northern Queensland last weekend, is causing a low-pressure system to extend down to NSW and all the way to the border of Victoria, according to Weatherzone.
The southern part of the state will be hit hardest by the storm, with meteorologist Joel Pippard explaining the conditions caused by the ex-tropical cyclone are having impacts thousands of kilometres away from where it initially formed.
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"As the system tracks west, bringing scattered to widespread thunderstorms on Thursday, it will spawn a coastal trough off the NSW coast," he said.
"The moisture feed from the tropics and the Tasman Sea will deliver heavy rainfall along the NSW coast, heaviest in the far south, with a growing powerful swell to impact the coast from Friday to next Tuesday."
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Rainfall of up to 110mm could hit Merimbula and Eden today, according to figures from the Bureau of Meteorology.
Bega could receive 70mm of rain today and 90mm tomorrow, with Weatherzone predicting the town could receive up to 200mm by Tuesday next week.
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