Adele's Las Vegas residency is reportedly in doubt because she's worried the climate would damage her voice.

The 'Hello' hitmaker was said to have been lined up for a $500,000-a-show 12-month deal to perform at the Wynn Hotel but she's hesitating about signing a contract as she's concerned the Nevada desert conditions could cause her vocal problems.

And the 29-year-old singer is also said to be concerned about how the residency would suit her five-year-old son Angelo, who she has with husband Simon Konecki.

The reports comes a few weeks after it was revealed the Wynn were hoping to make Adele Las Vegas' highest-paid resident with an offer that would also include VIP meet-and-greet packages, where wealthy fans splash out $25,000 a ticket to come face-to-face with their favourite musicians as well as seeing them perform.