The Bureau of Meteorology says the federal government is jeopardising its ability to provide accurate rain and storm observations through plans to expose its radar systems to harmful radio wave interference.

The Turnbull government is auctioning off space on a valuable radio frequency band – the 3.6GHz band – to usher in next-generation 5G mobile networks.

The Bureau of Meteorology's weather radar system is used to detect storms, such as this one at Bondi Beach.

The Australian Communications and Media Authority has proposed moving wireless internet service providers that currently use that band to another band - the 5.6GHz band - which is used by the bureau’s weather radar system.

In a response to Senate questions on notice, the bureau said it was concerned that sharing the spectrum with wireless internet providers - who supply a broadband service over a radio signal, mostly in regional areas - “could interfere with existing radars” and constrain future expansion.