Andrew Little, mayor of Wellington.

Wellington's mayor has hit out at the government's timeline for amalgamating councils, saying it's not enough time for residents to make a major decision.

But Andrew Little says he wants to talk seriously about amalgamation, while leaders further north of Wellington city grapple with how a super-city might look.

The government is requiring councils throughout the country to submit reorganisation plans by 9 August - or it will make the decisions for councils themselves.

In a speech in the capital on Wednesday, Little said the clock is ticking on Wellington's super-city plans.