Tasmanian fire authorities are bracing for potentially dangerous temperatures in the state's southeast and Upper Derwent Valley on Monday.
Hobart will reach 35 and tops of 37 are forecast for New Norfolk and Richmond.
It's prompted the Tasmania Fire Service to declare a Total Fire Ban for the Brighton, Derwent Valley, Hobart, Sorell, Central Highlands, Glamorgan Spring Bay, Huon Valley, Southern Midlands, Clarence, Glenorchy, Kingborough and Tasman municipalities.
It will come into effect for 24 hours from 2 am on Monday.
"This is due to a significant warming event and the associated conditions of low humidity and increasing winds," said Acting Regional Chief Ian Bounds.
"This combination will present significant fire weather across the south of the State, in particular potential severe conditions for many areas of the Upper Derwent and South East for an extended period."
The Weather Bureau's Luke Johnston says they've issued a Fire Weather Warning for Monday, not just because of the summer heat.
"It's likely that any thunderstorms that may develop tomorrow [Monday] afternoon will be very elevated, potentially dry thunderstorms," he said.
"If there are thunderstorms around, we may see lightning with no significant rainfall, which could be a cause for concern."
Crews attended a vegetation fire which broke out in Hunts Gully at Black Hills northwest of Hobart on Sunday afternoon.
Another measuring nearly three hectares is being controlled on private land on Woodsdale Road at Runnymede.