We can expect to swelter through the heatwave much of the region is currently experiencing for a few more days at least.

With a scorching maximum temperature of 37 degrees predicted for both Sunday and Monday, Canberra is the hottest of all the state and territory capitals.

No other will reach higher than 34 degrees, which the mercury in both Adelaide and Perth will hit.

Bureau of Meteorology forecaster Peter Zmijewski said Canberra could expect slightly milder conditions on Tuesday and Wednesday with both days expected to reach 34 degrees.

He said there was the chance of a thunderstorm in the afternoon on Monday, Tuesday and Wednesday which could help cool down the evenings.

However, he said temperatures would likely soar back into the high-30s later in the week.

Mr Zmijewski said most of the country was experiencing elevated temperatures due to an unmoving hot air mass.

There has been no front or any other weather activity to move that hot air leading to the extreme temperatures.

Canberrans may be tempted to head to the south coast where it is expected to be a little cooler.

Batemans Bay is predicted to reach 31 degrees on Sunday and 32 degrees on Monday.

The high temperatures have contributed to dangerous fire conditions with the fire danger rating for Sunday and Monday expected to be very high.

The bushfire burning north of Braidwood has burned over 300 hectares and is expected to continue burning for several days.

Residents are advised to consult the ACT Emergency Services Agency website to be kept up to date on fire conditions and total fire bans.