Taylor Swift jetted into Sydney on Monday ahead of her four concerts at Accor Stadium this week.

But Swifties are now worried the megastar, 34, may not even make it on stage thanks to the Harbour City’s extreme weather.

The Bureau of Meteorology has issued a severe thunderstorm warning for heavy rainfall, damaging winds and large hailstones for much of NSW on Friday and Saturday, placing a question mark above Swift’s first and second Sydney shows.

According to the Accor Stadium website, ‘events will go ahead rain, hail or shine’ unless the safety of patrons and the artist is at risk.

This leaves the potential for organisers to make last minute adjustments to Swift’s shows depending on the severity of the weather.

Fans are worried Taylor Swift’s Sydney shows may be cancelled due to the city’s wild weather this week. (Pictured: Swift performing in the rain in Sydney, November 2018)

The Bureau of Meteorology has issued a severe thunderstorm warning for heavy rainfall, damaging winds and large hailstones for much of NSW on Friday and Saturday, placing a question mark above Swift’s first and second Sydney shows

According to the Accor Stadium website, ‘events will go ahead rain, hail or shine’ unless the safety of patrons and the artist is at risk. This leaves the potential for organisers to make last minute adjustments to Swift’s shows depending on the severity of the weather. (Pictured: Swift performing in the rain in Sydney, November 2018)

Swift has already experienced setbacks thanks to Sydney’s stormy weather on Monday, after her private jet was delayed by up to 30 minutes as the pop star flew in from Melbourne. (Pictured: Swift touching down in Sydney in her private jet)

Concerned fans have taken to Reddit to speculate on whether the shows will be axed or postponed, with one writing: ‘Since it’s at Accor stadium and they have a rain policy, any chance it get’s cancelled if the weather’s bad.’

‘I can see a LOT of people freaking the f**k out if they do,’ the user added.

‘I’d say the only cancellation reason would be lightning. No one wants TayTay to die during an outdoor concert in Sydney!’ another wrote.

‘It’s at Accor, so it’s not fully under cover. She’s performed in the rain before so it would have to be very heavy rain and lightning for her to postpone. She’s only postponed two shows during this tour, I believe,’ someone else surmised.

Swift has already experienced setbacks thanks to Sydney’s stormy weather on Monday, after her private jet was delayed by up to 30 minutes as the pop star flew in from Melbourne.

Swift and her team were seen departing Melbourne at about midday on Monday, and landed safely in Sydney at 1.25pm.

If all goes to plan, she will play four sold-out shows from Friday to Monday, with 80,000 people attending each night.

Swift is believed to be staying at Crown’s presidential villa in Sydney’s Barangaroo while in town.

It comes amid rumours Swift is flying her NFL star beau Travis Kelce to Australia as she continues her Eras Tour.