SYDNEY — Rain fell across parts of bushfire-ravaged eastern Australia on Thursday and more wet weather was forecast, giving some relief following months of catastrophic blazes fuelled by climate change.

The fires, unprecedented for Australia in terms of duration and intensity, have claimed 28 lives and killed an estimated billion animals.

Sustained hot weather and only very rare periods of light rain in the affected areas have deepened the crisis.

So authorities had been looking forward to this week's rain hoping it would help contain or even extinguish some fires.

In the state of New South Wales, where many of the worst fires have burnt, there were "good falls" on some blazes early on Thursday, the local meteorology bureau reported.

In the southern city of Melbourne, thunderstorms late on Wednesday helped to clear bushfire smoke that had choked the city since the start of the week and disrupted the build-up to next week's Australian Open tennis tournament.

"Storms have improved air quality in most parts of the state," the Victorian Environment Protection Agency said.

More rain was forecast until the weekend which, if it does occur, would be the most sustained period of wet weather since the crisis began in September last year.

"This will be all of our Christmas, birthday, engagement, anniversary, wedding and graduation presents rolled into one. Fingers crossed," the New South Wales Rural Fire Service said early this week in reference to the forecast wet weather.

The fires have destroyed more than 2,000 homes and burnt 10 million hectares of land -- an area larger than South Korea or Portugal.

In New South Wales alone, 30 blazes were still burning out of control on Thursday, according to the state's rural fire service.

Australia endures bushfires every year but they started much earlier than normal last year and have lasted far longer.

Forests and farming land were already extremely dry due to a prolonged drought, providing the foundations for the fire crisis when extreme hot weather hit well before the southern summer.

Australia experienced its driest and hottest year on record in 2019, with its highest average maximum temperature of 41.9 degrees Celsius recorded in mid-December.

Scientists say the bushfires are the type of extreme disasters the world can expect more of as global warming intensifies. — AFP