Canberrans sweltering through Friday and Saturday's heatwave will be granted a relative reprieve on Sunday, as the hot weather begins to push out of the ACT.

By 2pm on Saturday, the temperature had hit 41.1 degrees at Canberra Airport.

Parts of Gungahlin were also left without electricity from 10:20am, while outages struck parts of Monash and Wanniassa just after 3pm.

ActewAGL said on Saturday it was expecting to restore power in the area by the afternoon and response crews were ready to go across the territory should another unplanned outage occur.

ACT emergency services have continued to request Canberrans limit their power usage to reduce the risk of blackouts.

Some recommendations posted on their website this afternoon include turning off lights, televisions and computers and minimising use of electric cooking equipment and dishwashers.

Residents were also reminded to use sunscreen, remain hydrated and avoid any strenuous activity this afternoon.

Sunday is expected to deliver a high of 31 degrees, following two days reaching over 40 degrees.

The forecast temperature drop will come as a relief to the city's human and animal inhabitants alike.

National Zoo and Aquarium operations manager Renee Osterloh said the animals' handlers provided them with a range of icy treats in the hot weather.

She said most of the animals slowed down and sought cool places to conserve energy and rest during hot summer days.

"We've got bloodsicles, fishicles and fruitsicles," she said.

Bookworms keen to get some pages read on Sunday will be able to use Belconnen Library, which will reopen after an air conditioning failure closed the building on Friday afternoon.

The territory's firefighters had a quiet Friday night and Saturday morning, with only small, easily-contained fires to attend to across the city.

A total fire ban is in place until 11.59pm on Sunday while a planned power outage has been taking place in the Canberra Centre since 5:30am, scheduled to finish at approximately 2:00pm this afternoon.

ActewAGL has some interesting advice for a customer experiencing an outage in Franklin. Photo: Facebook